A soft-pack lithium battery hot pressing and capacity-forming equipment

Abstract

The present invention relates to a soft-pack lithium battery hot pressing and capacity-forming device, including a restraining fixture, a frame, a positioning and locking device, a current quick connection device, a voltage quick connection device and a thermistor quick connection device; the current quick connection device, the voltage quick connection device and the thermistor quick connection device all adopt a probe and a conductive target point to contact and realize electrical connection, which can quickly realize the connection of all electrical connection lines, with simple lines, neat layout, high reliability and safety, and easy tracking and finding in case of failure. The positioning and locking device has a dual function, which is used for axial positioning and locking the restraining fixture, and is also used to drive the current quick connection device, the voltage quick connection device and the thermistor quick connection device for connection, with a simple structure, few parts and low cost.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery manufacturing equipment, and in particular to a soft-pack lithium battery hot pressing and capacity division equipment. Background Art

[0002] When hot pressing and capacitating soft-pack lithium batteries, a large current needs to be passed between the positive and negative electrodes of each battery for charging and discharging, and the voltage and temperature signals of each battery need to be collected. In addition, each battery needs to be heated and pressurized. The formation and capacitating equipment includes a restraint fixture, multiple layers arranged in a parallel array, and a layer pressurizing device at the tail. The layer also has a built-in cell heating component. The restraint fixture can drive the layer to move horizontally to achieve the effect of gathering and dispersing. Adjacent layers can clamp the middle cell (battery). The layer pressurizing device is used to pressurize the layer so that the layer presses the cell. The cell heating component inside the layer generates high temperature to heat the cell.

[0003] In the past, the cells for the formation and capacity lines of soft-pack lithium batteries were loaded at horizontal and flat workstations. Due to gravity, the cells will fall and move, and it is impossible to ensure that the positive and negative pole ears are aligned with the positive and negative conductive targets. For this reason, business card paper must be used to cover the cells (specifically, the battery formation auxiliary equipment disclosed in the Chinese utility model patent with announcement number CN207009579U). Since the transfer tooling is in a horizontal position to load the cells, business card paper must be used to cover the bottom to ensure that the positions of the cell ears are consistent and fall within the range of the conductive target. In this way, when changing models, the corresponding business card paper must be replaced according to the specifications of the cell, which is time-consuming and troublesome; in addition, because the business card paper is used to cover the bottom when loading, it is inconvenient to place double-row batteries in the same accordion grid, and the improvement of production line efficiency has a bottleneck that is difficult to break through.

[0004] For this purpose, the applicant has applied for a method and device for loading soft-package lithium batteries, which includes: a vertical cell loading machine erects a restraint fixture, and a six-axis robot grabs the cell from the cell preprocessing machine into the restraint fixture, wherein the cell is located between the layers of the restraint fixture, so that the cell is supported horizontally by the layers; the roller conveyor line sends the empty restraint fixture to the vertical cell loading machine to load the cell to be formed. Since the restraint fixture is in a vertical position when loading the cell, the layer on which the cell is placed in the restraint fixture is in a horizontal state, so that when loading the cell, the layer supports the cell and the cell will not fall and move, so when loading and transporting the cell, there is no need for the commonly used business card paper to cover the bottom; in addition, when loading the cell, it becomes easy to place two cells symmetrically between the same layer in a horizontal position, and the number of cells placed by the restraint fixture is twice that of the previous transport tooling, so that not only one-key changeover can be achieved, but also the production efficiency is doubled.

[0005] In the prior art, the large current lines, voltage signal lines, and temperature signal lines (thermistor signal lines) of the soft-pack lithium battery thermal pressing and capacity conversion equipment need to be electrically connected to the external control equipment. There are many lines, and they are scattered and complicated, which affects reliability and is not safe enough. It is also difficult to track and find when a fault occurs, and further improvement is needed. Summary of the invention

[0006] The object of the present invention is to provide a low-cost, simplified circuit soft-pack lithium battery hot pressing and capacity division equipment.

[0007] The technical solution provided by the present invention is: a soft-pack lithium battery hot pressing and capacity-forming device, including a restraining fixture, a frame, a positioning and locking device, a current quick connection device, a voltage quick connection device and a thermistor quick connection device;

[0008] The restraint fixture is arranged in a frame, and includes a plurality of layer plates and an outer frame, wherein the outer frame is surrounded by two side plates and two end plates, wherein the plurality of layer plates are arranged in parallel in an array in the outer frame, and the adjacent layer plates are used to carry the battery cells, wherein the layer plates are provided with a PCB board and a thermistor, wherein the PCB board is provided with a metal contact point for contacting and conducting electricity with the tabs on the battery cells, and the thermistor is used to detect the temperature of the battery cells;

[0009] The positioning and locking device is arranged on the frame, and is used for axial positioning and locking the restraining fixture, and is also used for driving the current quick connection device, the voltage quick connection device and the thermistor quick connection device for connection, including a mounting plate, a clamping cylinder, a first floating joint, a cylinder connection block, a transverse slide rail, a longitudinal slide rail, a transverse slide rail pad, a transverse drive plate, an inclined slot plate and a follower. The mounting plate is fixed on the frame, and the transverse slide rail and the longitudinal slide rail are fixedly arranged on the lower surface of the mounting plate. The inclined slot plate is slidably arranged on the mounting plate through the longitudinal slide rail. The clamping cylinder is fixed on the upper surface of the mounting plate and is connected to the cylinder connection block through the first floating joint. The mounting plate is provided with a rectangular hole, the cylinder connection block is fixedly connected with the chute plate after passing through the rectangular hole, the transverse driving plate is arranged on the transverse slide rail pad, the transverse slide rail pad is slidably arranged on the mounting plate through the transverse slide rail, and the movement direction is perpendicular to the movement direction of the chute plate, the chute plate is provided with a Z-shaped guide chute, the follower is fixedly arranged on the transverse driving plate and is located in the Z-shaped guide chute, the clamping cylinder drives the cylinder connection block and the chute plate to slide longitudinally through telescopic action, the follower on the chute plate drives the transverse driving plate to slide transversely, and straight grooves are arranged at both ends of the Z-shaped guide chute for making the transverse driving plate self-locking;

[0010] The current quick connection device includes a current conductive target assembly and a current probe connection assembly, wherein the current conductive target assembly is fixed on the side plate of the restraint fixture and is electrically connected to the PCB board through a first large current line, and the current probe connection assembly is fixed on the transverse driving board through a probe mounting plate, and the current probe connection assembly is connected to an external device through a second large current line;

[0011] The voltage quick connection device includes a voltage conductive target assembly and a voltage probe connection assembly, wherein the voltage conductive target assembly is fixed on the side plate of the restraint fixture and is electrically connected to the PCB board through a first voltage signal line, and the voltage probe connection assembly is fixed on the transverse driving board through a probe mounting plate, and the voltage probe connection assembly is connected to an external device through a second voltage signal line.

[0012] The thermistor quick connection device includes a thermistor conductive target assembly and a thermistor probe connection assembly, wherein the thermistor conductive target assembly is fixed on the side plate of the restraint fixture and is electrically connected to the PCB board through a first thermistor signal line, and the thermistor probe connection assembly is fixed on the transverse drive board through a probe mounting plate, and the thermistor probe connection assembly is connected to an external device through a second thermistor signal line.

[0013] When the clamping cylinder drives the lateral driving plate to move laterally, the lateral slide rail pad is positioned to lock the restraint clamp, and at the same time, the current conductive target assembly and the current probe docking assembly, the voltage conductive target assembly and the voltage probe docking assembly, and the thermistor conductive target assembly and the thermistor probe docking assembly are connected.

[0014] Among them, the current conductive target assembly, the voltage conductive target assembly and the thermistor conductive target assembly are integrated together on a conductive target board, and the conductive target board is fixedly arranged on the side plate of the restraint fixture through a conductive target board seat; the current probe docking assembly, the voltage probe docking assembly and the thermistor probe docking assembly are integrated together on a probe mounting board, and the probe mounting board is fixed on the transverse driving board through a probe mounting board seat.

[0015] The probes on the current probe docking assembly, the voltage probe docking assembly and the thermistor probe docking assembly are all straight rod probes, and the voltage probe docking assembly uses two voltage probes to be electrically connected to a voltage conductive target point in the voltage conductive target point assembly.

[0016] Among them, a pressure plate is also provided in the restraint fixture, and a pressure head through hole is provided on the end plate of the tail. The soft-pack lithium battery hot pressing and component capacity device also includes a layer plate pressure device, which is arranged at the rear end of the frame and is used to provide power for the battery cell pressurization. It includes a pressure seat, a pressure cylinder, a second floating joint, a cylinder connecting plate, a pressure head, a pressure head connecting plate, a pressure sensor, a guide shaft, a guide shaft fixing seat and a guide sleeve. The pressure seat is fixed on the frame, and the guide shaft is fixed on the cylinder connecting plate through the guide shaft fixing seat. The sleeve is fixedly arranged on the pressurizing seat, the guide shaft passes through the guide sleeve, the pressurizing cylinder is fixed on the pressurizing seat and is connected to the cylinder connecting plate through the second floating joint, the pressurizing cylinder drives the cylinder connecting plate to slide along the axial direction of the guide shaft, the pressurizing head connecting plate is arranged on the cylinder connecting plate through the pressure sensor, the pressurizing head is fixedly arranged on the pressurizing head connecting plate, after the pressurizing head passes through the pressurizing head through hole on the end plate of the outer frame, it abuts against the pressurizing plate in the restraint clamp to apply pressure, and the pressure sensor is used to detect the pressure of the pressurizing head.

[0017] Among them, the soft-pack lithium battery hot pressing and component capacity equipment also includes a water heating circulation device, which includes multiple battery cell heating components, a water pipeline component and a water heating circulation system. The battery cell heating component is arranged in a layer plate in the restraint fixture, and the layer plate includes an upper layer plate and a lower layer plate. The water pipeline component is arranged on the back of the restraint fixture to connect the water heating circulation system with the battery cell heating component. The water heating circulation system is used to heat water and form a water circulation. The water heating circulation system includes a water outlet and a water return port. The battery cell heating component includes a heating water pipe, and the heating water pipe is located on the upper The inside of the layer plate and the lower layer plate; the water pipeline assembly includes an inlet branch pipe, an outlet manifold, an outlet pipe, a connecting pipe and a plurality of pipe joints, the pipe joint array is arranged on the inlet branch pipe and the outlet manifold, the water inlet of the heating water pipe in the battery core heating assembly is connected to the pipe joint on the inlet branch pipe through a connecting pipe, the water outlet of the heating water pipe in the battery core heating assembly is connected to the pipe joint on the outlet branch pipe through a connecting pipe, the inlet branch pipe is connected to the water outlet of the water heating circulation system, one end of the outlet pipe is connected to the outlet manifold, and the other end is connected to the return water outlet of the water heating circulation system.

[0018] The outer surfaces of the upper plate and the lower plate are flat plates, and the inner surfaces are provided with a plurality of dovetail grooves, and are fixed as a whole by dovetail fixing strips.

[0019] Among them, the water heating circulation device also includes a water circuit adapter and a water circuit docking assembly, the water circuit docking assembly includes two male port assemblies, two female port assemblies, a water docking fixed plate, a linear slide rail, a water docking cylinder, a third floating joint, a water docking cylinder fixed plate and a circulating water pipe, the water circuit adapter is arranged on one side of the tail end plate of the restraint clamp and is connected to the water inlet diverter pipe, the two male port assemblies are both arranged on the other side of the tail end plate of the restraint clamp, one of the male port assemblies is connected to the water circuit adapter, and the other male port assembly is connected to the water outlet pipe, the two female port assemblies are fixed on the water docking fixed plate, and are connected to the water outlet and return port of the water heating circulation system through the circulating water pipe, the water docking fixed plate is slidably arranged on the linear slide rail, the water docking cylinder is fixed on the water docking cylinder fixed plate, and is connected to the water docking fixed plate through the third floating joint.

[0020] The male port assembly comprises a male port seat, a water sealing ring, a sealing valve core, a sealing valve seat, a one-way valve spring and an elastic retaining ring. The water sealing ring is arranged on the front end surface of the male port seat. The sealing valve core, the sealing valve seat, the one-way valve spring and the elastic retaining ring are all arranged in the male port seat, and from the outside to the inside, they are the elastic retaining ring, the sealing valve seat, the sealing valve core and the one-way valve spring. The elastic retaining ring is fixed to the front part of the male port seat. The sealing valve seat is clamped on the inner side of the elastic retaining ring. One end of the one-way valve spring abuts against the sealing valve core, and the other end abuts against the tail end plate of the restraining fixture, so that the sealing valve core elastically floats in the male port seat and forms an inclined seal with the sealing valve seat. Two O-rings are arranged on the inclined surface of the front end of the sealing valve core. The sealing valve seat is fixed in the male port seat by the elastic retaining ring, and the side sealing is realized by the O-ring. A water hole is arranged on the side of the sealing valve core, and a water channel is arranged inside. An O-ring is also arranged between the male port seat and the tail end plate of the restraining fixture.

[0021] The female port assembly includes a waterway housing, a joint, a felt ring, a felt pressure plate, a fastening nut, an elastic clamping head, an elastic clamping head seat, a pressure spring, a first-stage sealing ring and a second-stage sealing ring. The joint is arranged on the waterway housing and connected to the external waterway for removing water accumulated inside the waterway housing. The felt pressure plate is used to fix the felt ring on the outer end face of the waterway housing. The elastic clamping head, the elastic clamping head seat and the pressure spring are all arranged in the waterway housing. The pressure spring is arranged between the elastic clamping head and the elastic clamping head seat. The elastic clamping head is elastically and floatingly arranged on the elastic clamping head seat. Two O-rings are provided on the sides of the elastic clamping head and the elastic clamping head seat, a water channel is provided in the elastic clamping head seat, the fastening nut is screwed on the front end of the elastic clamping head seat to prevent the elastic clamping head from falling out, and a push rod is also provided at the front end of the elastic clamping head seat to push open the sealing valve core during docking. The first-stage sealing ring is arranged on the outer end face of the fastening nut, and the second-stage sealing ring is arranged on the outer end face of the elastic clamping head. The first-stage sealing ring and the second-stage sealing ring abut against the water sealing ring during docking to form a secondary seal, and an O-ring is provided between the elastic clamping head seat and the water docking fixing plate.

[0022] The beneficial effects of the present invention are as follows: the soft-pack lithium battery hot pressing and capacity-forming equipment includes a restraint fixture, a frame, a positioning and locking device, a current quick connection device, a voltage quick connection device, and a thermistor quick connection device. The current quick connection device, the voltage quick connection device, and the thermistor quick connection device all use a probe to contact a conductive target point to achieve electrical connection, which can quickly achieve the connection of all electrical connection lines. The lines are simple, the layout is neat, the reliability is high, the safety is also high, and it is easy to track and find when a fault occurs. The positioning and locking device has a dual function, which is used for axial positioning and locking the restraint fixture, and is also used to drive the current quick connection device, the voltage quick connection device, and the thermistor quick connection device for connection. It has a simple structure, few parts, and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the hot pressing and capacity division equipment for soft-pack lithium batteries according to the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of another angle of the embodiment of the soft-pack lithium battery hot pressing and capacity division equipment of the present invention;

[0025] Figure 3 2. It is a top view of an embodiment of the hot pressing and capacity division equipment for soft-pack lithium batteries of the present invention;

[0026] Figure 4 It is a schematic diagram of the exploded structure of an embodiment of the hot pressing and capacity division equipment for soft-pack lithium batteries of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the soft-pack lithium battery hot pressing and capacity-forming device of the present invention after the restraining clamp is removed;

[0028] Figure 6 is a schematic structural diagram of the restraint clamp of the present invention;

[0029] Figure 7 It is a schematic diagram of the overall structure of the positioning and locking device of the present invention;

[0030] Figure 8 is a schematic diagram of the exploded structure of the positioning and locking device of the present invention;

[0031] Fig. 9 It is a schematic diagram of the overall structure of the layer pressurizing device of the present invention;

[0032] Fig.10 It is a diagram showing the coordination relationship among the layer plate, the current quick connection device, the voltage quick connection device and the thermistor quick connection device of the present invention;

[0033] Fig.11 yes Fig.10 Enlarged view of point A in the middle;

[0034] Fig.12 It is a schematic diagram of the coordination relationship of the layer plate, the current quick connection device, the voltage quick connection device and the thermistor quick connection device of the present invention from another angle;

[0035] Fig.13 yes Fig.12 Enlarged view of point B in the middle;

[0036] Fig.14 It is a schematic diagram of the matching relationship between the lateral driving plate and the current probe docking assembly, the voltage probe docking assembly and the thermistor probe docking assembly of the present invention;

[0037] Fig.15 yes Fig.14 Enlarged view of point C in the middle;

[0038] Fig.16 It is a schematic diagram of the matching relationship between the side plate and the current conductive target assembly, the voltage conductive target assembly and the thermistor conductive target assembly of the present invention;

[0039] Fig.17 yes Fig.16 Enlarged view of point D in the middle;

[0040] Fig.18 It is a schematic diagram of the three-dimensional structure of the water heating circulation device of the present invention;

[0041] Fig.19 It is a side view of the water heating circulation device of the present invention (without the water heating circulation system);

[0042] Fig. 20 is a bottom view of the water heating circulation device of the present invention;

[0043] Fig.21 yes Fig. 20 Enlarged view of point E in the middle;

[0044] Fig. 22 It is a structural schematic diagram of the waterway connection assembly of the present invention;

[0045] Fig.23 is a half-section schematic diagram of the male port assembly of the present invention;

[0046] Fig.24 is a half-section schematic diagram of the female port assembly of the present invention;

[0047] Fig.25 It is a schematic diagram of the state of the male component and the female component before docking.

[0048] Fig.26 It is a schematic diagram of the state after the male port component and the female port component of the present invention are connected.

[0049] Fig. 27 It is a schematic diagram of the matching relationship between the layer plate and the electric core heating assembly of the present invention;

[0050] Fig.28 It is a schematic diagram of the decomposed structure of the matching relationship between the layer plate and the electric core heating assembly of the present invention;

[0051] Fig.29 It is a top view of the matching relationship between the water channel adapter, water pipeline assembly and layer plate of the present invention.

[0052] Among them, 1. restraint fixture; 11. layer plate; 111. upper plate; 112. lower plate; 113. dovetail groove; 114. dovetail fixing strip; 12. outer frame; 121. side plate; 122. end plate; 141. pressure head through hole; 13. PCB board; 131. metal contact; 14. pressure plate; 2. rack; 3. positioning locking device; 31. mounting plate; 311. rectangular hole; 32. clamping cylinder; 33. first floating joint; 34. cylinder connecting block; 35. horizontal slide rail; 36. longitudinal slide rail; 37. horizontal slide rail pad; 38. horizontal drive plate; 39. inclined groove plate; 391. Z-shaped guide inclined groove; 301. follower; 4. current quick connection device; 41. current conductive target assembly; 42. electric Flow probe connection assembly; 43, first large current line; 44, second large current line; 5, voltage quick connection device; 51, voltage conductive target assembly; 52, voltage probe connection assembly; 53, first voltage signal line; 54, second voltage signal line; 6, thermistor quick connection device; 61, thermistor conductive target assembly; 62, thermistor probe connection assembly; 63, first thermistor signal line; 64, second thermistor signal line; 71, conductive target plate; 72, conductive target plate seat; 73, probe mounting plate; 74, probe mounting plate seat; 8, layer pressurizing device; 81, pressurizing seat; 82, pressurizing cylinder; 83, second floating joint; 84, cylinder connecting plate; 85, pressurizing head; 86, pressurizing head connecting plate; 87. Pressure sensor; 88. Guide shaft; 89. Guide shaft fixing seat; 890. Guide sleeve; 9. Water heating circulation device; 91. Cell heating assembly; 911. Heating water pipe; 92. Water pipe assembly; 921. Inlet manifold; 922. Outlet manifold; 923. Outlet pipe; 924. Connecting pipe; 925. Pipe joint; 93. Water heating circulation system; 931. Outlet; 932. Return port; 94. Waterway adapter; 95. Waterway connection assembly; 951. Male port assembly; 9511. Male port seat; 9512. Sealing ring; 9513. Sealing valve core; 95131. Water hole; 95132. Waterway; 9514. Sealing valve seat; 9515. Check valve spring; 9516. Elastic retaining ring; 9 517, O-ring; 9518, O-ring; 9519, O-ring; 952, female port assembly; 9521, waterway housing; 9522, joint; 9523, felt ring; 9524, felt pressure plate; 9525, fastening nut; 9526, elastic clamping head; 9527, elastic clamping head seat; 95271, waterway; 95272, push rod; 9528, pressure spring; 9529, first-stage sealing ring; 95201, second-stage sealing ring; 95202, O-ring; 95203, O-ring; 953, water connection fixing plate; 954, linear guide rail; 955, water connection cylinder; 956, third floating joint; 957, water connection cylinder fixing plate; 958, circulating water pipe;100, battery cell; 101, tab. ; DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0054] As an embodiment of the soft-pack lithium battery thermal compression and capacity division equipment of the present invention, Figures 1 to 29 As shown, it includes a restraint clamp 1, a frame 2, a positioning locking device 3, a current quick connection device 4, a voltage quick connection device 5 and a thermistor quick connection device 6;

[0055] The restraint fixture 1 is arranged in the frame 2, and includes a plurality of layer plates 11 and an outer frame 12. The outer frame 12 is surrounded by two side plates 121 and two end plates 122. The plurality of layer plates 11 are arranged in parallel in an array in the outer frame 12. Adjacent layer plates 11 are used to carry the battery cells 100. A PCB board 13 and a thermistor (not shown) are arranged on the layer plates 11. The PCB board 13 is provided with a metal contact 131 for contacting and conducting with the tab 101 on the battery cell 100. The thermistor is used to detect the temperature of the battery cell 100.

[0056] The positioning and locking device 3 is arranged on the frame 2, and is used for axial positioning and locking the restraining fixture 1, and is also used to drive the current quick connection device 4, the voltage quick connection device 5 and the thermistor quick connection device 6 for connection, including a mounting plate 31, a clamping cylinder 32, a first floating joint 33, a cylinder connection block 34, a transverse slide rail 35, a longitudinal slide rail 36, a transverse slide rail pad 37, a transverse drive plate 38, an inclined slot plate 39 and a follower 301, wherein the mounting plate 31 is fixed on the frame 2, the transverse slide rail 35 and the longitudinal slide rail 36 are both fixedly arranged on the lower surface of the mounting plate 31, the inclined slot plate 39 is slidably arranged on the mounting plate 31 through the longitudinal slide rail 36, the clamping cylinder 32 is fixed on the upper surface of the mounting plate 31, and is connected to the cylinder connection block 34 through the first floating joint 33, the mounting plate 31 is provided with a rectangular hole 311, the cylinder connection block 34 passes through the rectangular hole 311 and is fixedly connected with the inclined slot plate 39. The transverse driving plate 38 is arranged on the transverse slide rail pad 37. The transverse slide rail pad 37 is slidably arranged on the mounting plate 31 through the transverse slide rail 35, and the movement direction is perpendicular to the movement direction of the inclined slot plate 39. The inclined slot plate 39 is provided with a Z-shaped guide inclined slot 391. The follower 301 is fixedly arranged on the transverse driving plate 38 and is located in the Z-shaped guide inclined slot 391. The clamping cylinder 32 drives the cylinder connecting block 34 and the inclined slot plate 39 to slide longitudinally through the telescopic action. The follower 301 on the inclined slot plate 39 drives the transverse driving plate 38 to slide transversely. Straight grooves are provided at both ends of the Z-shaped guide inclined slot 391 for making the transverse driving plate 38 self-locking; (during operation, the transverse driving plate 38 and the parts thereon are ensured not to yield, thereby ensuring stability and reliability during operation).

[0057] The current quick connection device 4 includes a current conductive target assembly 41 and a current probe connection assembly 42. The current conductive target assembly 41 is fixed on the side plate 121 of the restraint fixture 1 and is electrically connected to the PCB board 13 through the first large current line 43. The current probe connection assembly 42 is fixed on the transverse drive board through the probe mounting plate 73. The current probe connection assembly 42 is connected to an external device (referring to an electrical cabinet matched with the device) through the second large current line 44.

[0058] The voltage quick connection device 5 includes a voltage conductive target assembly 51 and a voltage probe connection assembly 52. ​​The voltage conductive target assembly 51 is fixed on the side plate 121 of the restraint fixture 1 and is electrically connected to the PCB board 13 through the first voltage signal line 53. The voltage probe connection assembly 52 is fixed on the horizontal driving board 38 through the probe mounting plate 73. The voltage probe connection assembly 52 is connected to an external device through the second voltage signal line 54.

[0059] The thermistor quick connection device 6 includes a thermistor conductive target assembly 61 and a thermistor probe connection assembly 62. The thermistor conductive target assembly 61 is fixed on the side plate 121 of the restraint fixture 1 and is electrically connected to the PCB board 13 through the first thermistor signal line 63. The thermistor probe connection assembly 62 is fixed on the transverse drive board 38 through the probe mounting plate 73. The thermistor probe connection assembly 62 is connected to an external device through the second thermistor signal line 64.

[0060] When the clamping cylinder 32 drives the lateral driving plate 38 to move laterally, the lateral slide rail pad 37 is positioned and locked to the restraint clamp 1 (specifically, a flange is provided at the front end of the lateral slide rail pad, and the flange abuts against the side of the restraint clamp), and at the same time, the current conductive target assembly 41 and the current probe docking assembly 42, the voltage conductive target assembly 51 and the voltage probe docking assembly 52, and the thermistor conductive target assembly 61 and the thermistor probe docking assembly 62 are connected.

[0061] The soft-pack lithium battery hot pressing and capacity-forming equipment includes a restraint fixture 1, a frame 2, a positioning and locking device 3, a current quick connection device 4, a voltage quick connection device 5 and a thermistor quick connection device 6. The current quick connection device 4, the voltage quick connection device 5 and the thermistor quick connection device 6 all use a probe to contact a conductive target to achieve electrical connection, which can quickly achieve the connection of all electrical connection lines. The lines are simple, the layout is neat, the reliability is high, the safety is also high, and it is easy to track and find when a fault occurs. The positioning and locking device 3 has a dual function, which is used for axial positioning and locking the restraint fixture 1, and is also used to drive the current quick connection device 4, the voltage quick connection device 5 and the thermistor quick connection device 6 for connection. It has a simple structure, few parts and low cost.

[0062] In this embodiment, the current conductive target assembly 41, the voltage conductive target assembly 51 and the thermistor conductive target assembly 61 are integrated together on the conductive target plate 71, and the conductive target plate 71 is fixedly arranged on the side plate 121 of the restraint fixture 1 through the conductive target plate seat 72; the current probe docking assembly 42, the voltage probe docking assembly 52 and the thermistor probe docking assembly 62 are integrated together on the probe mounting plate 73, and the probe mounting plate 73 is fixed on the transverse driving plate 38 through the probe mounting plate seat 74. As long as the current probe docking assembly 42, the voltage probe docking assembly 52 and the thermistor probe docking assembly 62 are in contact with the current conductive target assembly 41, the voltage conductive target assembly 51 and the thermistor conductive target assembly 61 respectively and compressed by 5 mm, good conductivity can be ensured.

[0063] In this embodiment, the probes on the current probe docking assembly 42, the voltage probe docking assembly 52 and thermistor probe docking assembly 62 are all straight rod probes, and the voltage probe docking assembly 52 uses two voltage probes to electrically connect to a voltage conductive target point in the voltage conductive target point assembly, so that the electrical connection is more reliable.

[0064] In this embodiment, a pressure plate 14 is further provided in the restraint fixture 1, and a pressure head through hole 141 is provided on the end plate 122 at the tail. The soft-pack lithium battery hot pressing and component capacity device also includes a layer plate pressure device 8, and the layer plate pressure device 8 is arranged at the rear end of the frame 2, and is used to provide power for pressurizing the battery cell 100, including a pressure seat 81, a pressure cylinder 82, a second floating joint 83, a cylinder connecting plate 84, a pressure head 85, a pressure head connecting plate 86, a pressure sensor 87, a guide shaft 88, a guide shaft fixing seat 89 and a guide sleeve 890. The pressure seat 81 is fixed on the frame 2, and the guide shaft 88 is fixed on the cylinder connecting plate 84 through the guide shaft fixing seat 89. The sleeve 890 is fixedly arranged on the pressurizing seat 81, the guide shaft 88 passes through the guide sleeve 890, the pressurizing cylinder 82 is fixed on the pressurizing seat 81, and is connected to the cylinder connecting plate 84 through the second floating joint 83, the pressurizing cylinder 82 drives the cylinder connecting plate 83 to slide along the axial direction of the guide shaft 88, the pressurizing head connecting plate 86 is arranged on the cylinder connecting plate 84 through the pressure sensor 87, the pressurizing head 85 is fixedly arranged on the pressurizing head connecting plate 86, the pressurizing head 85 passes through the pressurizing head through hole 141 on the outer frame end plate 122, and abuts against the pressurizing plate 14 in the restraint clamp 1 to apply pressure, and the pressure sensor 87 is used to detect the pressure of the pressurizing head 85. (The pressure can be servo-controlled and kept constant by the electric proportional valve on the air path of the clamping cylinder).

[0065] When the piston rod of the pressurizing cylinder 82 is extended, the pressurizing head 85 abuts against the pressurizing plate 14 in the restraining fixture 1, compressing the battery cells 100 between the layers 11, so that the battery cells 100 are formed under pressure. When the piston rod of the pressurizing cylinder 82 is retracted, the pressurizing head 85 is retracted, and no pressure is applied between the pressurizing plate 14, which facilitates the transportation of the restraining fixture 1.

[0066] In the prior art, the cell heating assembly used to heat the layer plate adopts electric heating, and an electric heating tube is arranged inside. When the electric heating tube is energized, the layer plate generates high temperature to heat the cell. However, electric heating is not only costly, but also has complex circuits and many faults. Electric heating also has disadvantages such as uneven temperature and electric heating after-effect. In this embodiment, the soft-pack lithium battery hot pressing and component capacity device also includes a water heating circulation device 9, which includes a plurality of battery core heating components 91, a water pipeline component 92 and a water heating circulation system 93. The battery core heating component 91 is arranged in the layer plate 11 in the restraint fixture 1, and the layer plate 11 includes an upper plate 111 and a lower plate 112. The water pipeline component 92 is arranged on the back of the restraint fixture 1, and is used to connect the water heating circulation system 93 and the battery core heating component 91. The water heating circulation system 93 is used to heat water and form a water circulation. The water heating circulation system 93 includes a water outlet 931 and a water return port 932. The battery core heating component 91 includes a heating water pipe 911, and the heating water pipe 911 is located inside the upper plate 111 and the lower plate 112. The water pipeline assembly 92 includes an inlet manifold 921, an outlet manifold 922, an outlet pipe 923, a connecting pipe 924 and a plurality of pipe joints 925, wherein the pipe joints 925 are arranged in an array on the inlet manifold 921 and the outlet manifold 922, the water inlet of the heating water pipe 911 in the electric core heating assembly 91 is connected to the pipe joint 925 on the inlet manifold 921 through the connecting pipe 924, the water outlet of the heating water pipe 911 in the electric core heating assembly 91 is connected to the pipe joint 925 on the outlet manifold 922 through the connecting pipe 924, the inlet manifold 921 is connected to the water outlet 931 of the water heating circulation system 93, one end of the outlet pipe 923 is connected to the outlet manifold 922, and the other end is connected to the return water inlet 932 of the water heating circulation system 93.

[0067] The water inlet manifold 921 is used to divert the hot water in the water heating circulation system 93 to each battery cell heating component 91 , the water outlet manifold 922 is used to converge the cooling water after the heating circulation in each battery cell heating component 91 , and the water outlet pipe 923 is used to return the cooling water in the water outlet manifold 922 to the water heating circulation system 93 .

[0068] The soft-pack lithium battery hot pressing and component capacity device adopts a new battery cell heating method, circulating hot water heating. The water pipe assembly 92 and the water heating circulation system 93 in the water heating circulation device can heat water and form a water circulation. The heating water pipe 911 inside the battery cell heating assembly 91 can circulate hot water to heat the upper plate 111 and the lower plate 112. The restraint fixture 1 can drive the multiple layers 11 arranged in a parallel array and the battery cell heating assembly 91 to move horizontally. When the layers 11 gather together, the adjacent layers 11 can heat the battery cell in the middle. 100 is pressurized, and heat is transferred to the battery cell 100 at the same time, so as to realize heating and pressurizing of the battery cell 100; the structure of the water pipeline component 92 is specially designed, and the circulating hot water in each battery cell heating component 91 satisfies the first-in-last-out and last-in-first-out circulation process, so that the flow rate of the heated water in the battery cell heating component 91 is basically the same, and the heating temperature of all the battery cell heating components 91 is consistent; the use of hot water circulation can simplify the circuit, save costs, improve the uniformity of the temperature of the upper plate 111 and the lower plate 112, avoid leakage, reduce danger, and be more reliable.

[0069] In this embodiment, the upper plate 111 and the lower plate 112 have flat outer surfaces, multiple dovetail grooves 113 are provided on the inner surfaces, and are fixed together by dovetail fixing strips 114. In this way, the contact surface of the battery cell is smooth and has no marks, high fit, and uniform heat transfer.

[0070] After adopting the above scheme, the large current line, voltage signal line, and thermistor signal can all realize the automatic connection function. It would be even better if the water heating circulation device can also realize the automatic connection function. In order to solve this technical problem, in this embodiment, the water heating circulation device 9 also includes a water circuit adapter 94 and a water circuit docking assembly 95. The water circuit docking assembly 95 includes two male port assemblies 951, two female port assemblies 952, a water docking fixing plate 953, a linear slide rail 954, a water docking cylinder 955, a third floating joint 956, a water docking cylinder fixing plate 957 and a circulating water pipe 958. The water circuit adapter 94 is arranged on one side of the tail end plate 122 of the restraint clamp 1 and is connected to the water inlet manifold 921. The two male port assemblies 951 are both arranged on the restraint On the other side of the tail end plate 122 of the clamp 1, one male component 951 is connected to the water circuit adapter 94, and the other male component 951 is connected to the water outlet pipe 923. The two female components 952 are fixed on the water connection fixing plate 953, and are connected to the water outlet 931 and the return water port 932 of the water heating circulation system 93 through the circulating water pipe 958. The water connection fixing plate 953 is slidably set on the linear slide rail 954, and the water connection cylinder 955 is fixed on the water connection cylinder fixing plate 957, and is connected to the water connection fixing plate 953 through the third floating joint 956.

[0071] When connection is required, the water connection cylinder 955 is activated, and the water connection cylinder 955 pushes the water connection fixing plate 953 forward on the linear slide rail 954 through the third floating joint 956, and the female port component 952 follows the forward movement and contacts the male port component 951, thereby realizing the connection of the waterway; when separation is required, the water connection cylinder 955 is activated, and the water connection cylinder 955 pushes the water connection fixing plate 953 backward on the linear slide rail 954 through the third floating joint 956, and the female port component 952 follows the backward movement and separates from the male port component 951, thereby realizing the separation of the waterway.

[0072] In this embodiment, the male port assembly 951 includes a male port seat 9511, a water sealing ring 9512, a sealing valve core 9513, a sealing valve seat 9514, a one-way valve spring 9515 and an elastic retaining ring 9516. The water sealing ring 9512 is arranged on the front end surface of the male port seat 9511, and the sealing valve core 9513, the sealing valve seat 9514, the one-way valve spring 9515 and the elastic retaining ring 9516 are all arranged in the male port seat 9511, and from the outside to the inside, they are the elastic retaining ring 9516, the sealing valve seat 9514, the sealing valve core 9513 and the one-way valve spring 9515, the elastic retaining ring 9516 is fixed to the front part of the male port seat 9511, and the sealing valve seat 9514 is clamped inside the elastic retaining ring 9516. On the side, one end of the one-way valve spring 9515 abuts against the sealing valve core 9513, and the other end abuts against the tail end plate 122 of the restraint clamp 1, so that the sealing valve core 9513 elastically floats in the male seat 9511 and forms a bevel seal with the sealing valve seat 9514. Two O-rings 9517 are provided on the front end bevel of the sealing valve core 9513. The sealing valve seat 9514 is fixed in the male seat 9511 by an elastic retaining ring 9516, and side sealing is achieved by the O-ring 9517. A water hole 95131 is provided on the side of the sealing valve core 9513, and a water channel 95132 is provided inside. An O-ring 9519 is also provided between the male seat 9511 and the tail end plate 122 of the restraint clamp.

[0073] The female port assembly 952 includes a water channel housing 9521, a joint 9522, a felt ring 9523, a felt pressure plate 9524, a fastening nut 9525, an elastic clamping head 9526, an elastic clamping head seat 9527, a pressure spring 9528, a first-stage sealing ring 9529 and a second-stage sealing ring 95201. The joint 9522 is arranged on the water channel housing 9521 and is connected to the external water channel to remove the accumulated water inside the water channel housing 9521. The felt pressure plate 9524 is used to fix the felt ring 9523 on the outer end surface of the water channel housing 9521. The elastic clamping head 9526, the elastic clamping head seat 9527 and the pressure spring 9528 are all arranged in the water channel housing 9521. The pressure spring 9528 is arranged between the elastic clamping head 9526 and the elastic clamping head seat 9527. The elastic clamping head 9526 is elastically and floatingly arranged on the elastic clamping head On the seat 9527, two O-rings 95202 are provided on the sides of the elastic pressing head 9526 and the elastic pressing head seat 9527, a water channel 95271 is provided in the elastic pressing head seat 9527, the fastening nut 9525 is screwed on the front end of the elastic pressing head seat 9527 to prevent the elastic pressing head 9526 from falling out, and a push rod 95272 is also provided at the front end of the elastic pressing head seat 9527 to push open the sealing valve core 9513 when connecting, the first-stage sealing ring 9529 is arranged on the outer end face of the fastening nut 9525, and the second-stage sealing ring 95201 is arranged on the outer end face of the elastic pressing head 9526, the first-stage sealing ring 9529 and the second-stage sealing ring 95201 are in contact with the water sealing ring 9512 when connecting to form a secondary seal, and an O-ring 95203 is provided between the elastic pressing head seat 9527 and the water connection fixing plate 953.

[0074] The specific action process of the connection in this embodiment is: the piston rod of the water connection cylinder 955 extends out, the water connection fixing plate 953 moves horizontally on the linear slide rail 954, and the female port assembly 952 follows the movement. First, the second-stage sealing ring 95201 abuts against the water sealing ring 9512 to achieve the second-stage sealing, and the piston rod of the water connection cylinder 955 continues to extend, the pressure spring 9528 is compressed, and the push rod 95272 at the front end of the elastic compression head seat 9527 contacts and pushes the sealing valve core 9513 to move backward, the one-way valve spring 9515 is compressed, and the first-stage sealing ring 9529 abuts against the water sealing ring 9512 to achieve the first-stage sealing. At the same time, a gap appears between the sealing valve core 9513 and the sealing valve seat 9514, and water can form a water channel through the water hole 95131 on the sealing valve core 9513. At this time, the male port assembly 951 and the female port assembly 952 are completely connected, realizing the water connection between the water heating circulation system 93 and the water pipeline assembly 92. When the piston rod of the water connection cylinder 955 is retracted, the sealing valve core 9513 is first in close contact with the sealing valve seat 9514 under the action of the one-way valve spring 9515, and the water in the restraint clamp 1 is sealed, preparing for the separation of the restraint clamp 1. The piston rod of the water connection cylinder 955 continues to retract, and the female assembly 952 is completely separated from the male assembly 951.

[0075] The water connection component 95 of this embodiment can be automatically connected and separated. When connected, the connection action is simple and the water sealing is good. After separation, the male component 951 can be automatically sealed to prevent the water in the water pipe component 92 and the battery core heating component 91 from flowing out. The water at the female component 952 can flow out from the joint 9522 and the accumulated water in the water channel shell 9521 can be discharged through the external water channel. It has low environmental requirements, wide application, and is not easily restricted.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A soft-pack lithium battery hot pressing and capacity division equipment, characterized in that: It includes a restraint fixture, a frame, a positioning locking device, a current quick connection device, a voltage quick connection device and a thermistor quick connection device; The restraint fixture is arranged in a frame, and includes a plurality of layer plates and an outer frame, wherein the outer frame is surrounded by two side plates and two end plates, wherein the plurality of layer plates are arranged in parallel in an array in the outer frame, and the adjacent layer plates are used to carry the battery cells, wherein the layer plates are provided with a PCB board and a thermistor, wherein the PCB board is provided with a metal contact point for contacting and conducting electricity with the tabs on the battery cells, and the thermistor is used to detect the temperature of the battery cells; The positioning and locking device is arranged on the frame, and is used for axial positioning and locking the restraining fixture, and is also used for driving the current quick connection device, the voltage quick connection device and the thermistor quick connection device for connection, including a mounting plate, a clamping cylinder, a first floating joint, a cylinder connection block, a transverse slide rail, a longitudinal slide rail, a transverse slide rail pad, a transverse drive plate, an inclined slot plate and a follower. The mounting plate is fixed on the frame, and the transverse slide rail and the longitudinal slide rail are fixedly arranged on the lower surface of the mounting plate. The inclined slot plate is slidably arranged on the mounting plate through the longitudinal slide rail. The clamping cylinder is fixed on the upper surface of the mounting plate and is connected to the cylinder connection block through the first floating joint. The mounting plate is provided with a rectangular hole, the cylinder connection block is fixedly connected with the chute plate after passing through the rectangular hole, the transverse driving plate is arranged on the transverse slide rail pad, the transverse slide rail pad is slidably arranged on the mounting plate through the transverse slide rail, and the movement direction is perpendicular to the movement direction of the chute plate, the chute plate is provided with a Z-shaped guide chute, the follower is fixedly arranged on the transverse driving plate and is located in the Z-shaped guide chute, the clamping cylinder drives the cylinder connection block and the chute plate to slide longitudinally through telescopic action, the follower on the chute plate drives the transverse driving plate to slide transversely, and straight grooves are arranged at both ends of the Z-shaped guide chute for making the transverse driving plate self-locking; The current quick connection device includes a current conductive target assembly and a current probe connection assembly, wherein the current conductive target assembly is fixed on the side plate of the restraint fixture and is electrically connected to the PCB board through a first large current line, and the current probe connection assembly is fixed on the transverse driving board through a probe mounting plate, and the current probe connection assembly is connected to an external device through a second large current line; The voltage quick connection device includes a voltage conductive target assembly and a voltage probe connection assembly, wherein the voltage conductive target assembly is fixed on the side plate of the restraint fixture and is electrically connected to the PCB board through a first voltage signal line, and the voltage probe connection assembly is fixed on the transverse driving board through a probe mounting plate, and the voltage probe connection assembly is connected to an external device through a second voltage signal line. The thermistor quick connection device includes a thermistor conductive target assembly and a thermistor probe connection assembly, wherein the thermistor conductive target assembly is fixed on the side plate of the restraint fixture and is electrically connected to the PCB board through a first thermistor signal line, and the thermistor probe connection assembly is fixed on the transverse drive board through a probe mounting plate, and the thermistor probe connection assembly is connected to an external device through a second thermistor signal line. When the clamping cylinder drives the transverse driving plate to move transversely, the transverse slide rail pad is positioned to lock the restraining fixture, and at the same time, the current conductive target assembly and the current probe docking assembly, the voltage conductive target assembly and the voltage probe docking assembly, and the thermistor conductive target assembly and the thermistor probe docking assembly are connected; The current conductive target assembly, the voltage conductive target assembly and the thermistor conductive target assembly are integrated together on a conductive target board, and the conductive target board is fixedly arranged on the side plate of the restraint fixture through a conductive target board seat; the current probe docking assembly, the voltage probe docking assembly and the thermistor probe docking assembly are integrated together on a probe mounting plate, and the probe mounting plate is fixed on the transverse driving plate through a probe mounting plate seat; The restraint fixture is also provided with a pressure plate, and a pressure head through hole is provided on the end plate of the tail. The soft-pack lithium battery hot pressing and component capacity device also includes a layer plate pressure device, which is arranged at the rear end of the frame and is used to provide power for the battery cell pressurization. It includes a pressure seat, a pressure cylinder, a second floating joint, a cylinder connecting plate, a pressure head, a pressure head connecting plate, a pressure sensor, a guide shaft, a guide shaft fixing seat and a guide sleeve. The pressure seat is fixed on the frame, and the guide shaft is fixed to the cylinder connecting plate through the guide shaft fixing seat. The guide sleeve is fixed The pressurizing cylinder is fixedly arranged on the pressurizing seat, and the guide shaft passes through the guide sleeve. The pressurizing cylinder is fixed on the pressurizing seat and is connected to the cylinder connecting plate through the second floating joint. The pressurizing cylinder drives the cylinder connecting plate to slide along the axial direction of the guide shaft. The pressurizing head connecting plate is arranged on the cylinder connecting plate through the pressure sensor. The pressurizing head is fixedly arranged on the pressurizing head connecting plate. After the pressurizing head passes through the pressurizing head through hole on the end plate of the outer frame, it abuts against the pressurizing plate in the restraint clamp to apply pressure. The pressure sensor is used to detect the pressure of the pressurizing head.

2. The soft-pack lithium battery hot pressing and capacity division equipment according to claim 1, characterized in that: The probes on the current probe docking assembly, the voltage probe docking assembly and the thermistor probe docking assembly are all straight rod probes, and two voltage probes in the voltage probe docking assembly are electrically connected to a voltage conductive target point in the voltage conductive target point assembly.

3. The soft-pack lithium battery hot pressing and capacity division equipment according to claim 1, characterized in that: The soft-pack lithium battery hot pressing and component capacity device also includes a water heating circulation device, which includes multiple battery core heating components, a water pipeline component and a water heating circulation system. The battery core heating component is arranged in a layer plate in the restraint fixture, and the layer plate includes an upper layer plate and a lower layer plate. The water pipeline component is arranged on the back of the restraint fixture to connect the water heating circulation system with the battery core heating component. The water heating circulation system is used to heat water and form a water circulation. The water heating circulation system includes a water outlet and a water return port. The battery core heating component includes a heating water pipe, and the heating water pipe is located on the upper layer plate. The inside of the board and the lower board; the water pipeline assembly includes an inlet diverter, an outlet manifold, an outlet pipe, a connecting pipe and a plurality of pipe joints, the pipe joint array is arranged on the inlet diverter and the outlet manifold, the water inlet of the heating water pipe in the battery core heating assembly is connected to the pipe joint on the inlet diverter through a connecting pipe, the water outlet of the heating water pipe in the battery core heating assembly is connected to the pipe joint on the outlet diverter through a connecting pipe, the inlet diverter is connected to the water outlet of the water heating circulation system, one end of the outlet pipe is connected to the outlet manifold, and the other end is connected to the return water outlet of the water heating circulation system.

4. The soft-pack lithium battery hot pressing and capacity division equipment according to claim 3, characterized in that: The upper plate and the lower plate have flat outer surfaces, multiple dovetail grooves are arranged on the inner surfaces, and are fixed together by dovetail fixing strips.

5. The soft-pack lithium battery hot pressing and capacity division equipment according to claim 3, characterized in that: The water heating circulation device also includes a water circuit adapter and a water circuit docking assembly, and the water circuit docking assembly includes two male port assemblies, two female port assemblies, a water docking fixed plate, a linear slide rail, a water docking cylinder, a third floating joint, a water docking cylinder fixed plate and a circulating water pipe. The water circuit adapter is arranged on one side of the tail end plate of the restraint clamp and is connected to the water inlet diverter pipe. The two male port assemblies are both arranged on the other side of the tail end plate of the restraint clamp, one of the male port assemblies is connected to the water circuit adapter, and the other male port assembly is connected to the water outlet pipe. The two female port assemblies are fixed on the water docking fixed plate and are connected to the water outlet and return port of the water heating circulation system through the circulating water pipe. The water docking fixed plate is slidably arranged on the linear slide rail, and the water docking cylinder is fixed on the water docking cylinder fixed plate and is connected to the water docking fixed plate through the third floating joint.

6. The soft-pack lithium battery hot pressing and capacity division equipment according to claim 5, characterized in that: The male port assembly comprises a male port seat, a water sealing ring, a sealing valve core, a sealing valve seat, a one-way valve spring and an elastic retaining ring. The water sealing ring is arranged on the front end face of the male port seat. The sealing valve core, the sealing valve seat, the one-way valve spring and the elastic retaining ring are all arranged in the male port seat, and from the outside to the inside, they are the elastic retaining ring, the sealing valve seat, the sealing valve core and the one-way valve spring in sequence. The elastic retaining ring is fixed to the front part of the male port seat. The sealing valve seat is clamped on the inner side of the elastic retaining ring. One end of the one-way valve spring abuts against the sealing valve core, and the other end abuts against the tail end plate of the restraining fixture, so that the sealing valve core elastically floats in the male port seat and forms an inclined seal with the sealing valve seat. Two O-rings are arranged on the inclined surface of the front end of the sealing valve core. The sealing valve seat is fixed in the male port seat by the elastic retaining ring, and side sealing is achieved by the O-ring. A water hole is arranged on the side of the sealing valve core, and a water channel is arranged inside. An O-ring is also arranged between the male port seat and the tail end plate of the restraining fixture. The female port assembly includes a waterway housing, a joint, a felt ring, a felt pressure plate, a fastening nut, an elastic clamping head, an elastic clamping head seat, a pressure spring, a first-stage sealing ring and a second-stage sealing ring. The joint is arranged on the waterway housing and connected to the external waterway for removing water accumulated inside the waterway housing. The felt pressure plate is used to fix the felt ring on the outer end face of the waterway housing. The elastic clamping head, the elastic clamping head seat and the pressure spring are all arranged in the waterway housing. The pressure spring is arranged between the elastic clamping head and the elastic clamping head seat. The elastic clamping head is elastically and floatingly arranged on the elastic clamping head seat. Two O-rings are provided on the sides of the elastic clamping head and the elastic clamping head seat, a water channel is provided in the elastic clamping head seat, the fastening nut is screwed on the front end of the elastic clamping head seat to prevent the elastic clamping head from falling out, and a push rod is also provided at the front end of the elastic clamping head seat to push open the sealing valve core during docking. The first-stage sealing ring is arranged on the outer end face of the fastening nut, and the second-stage sealing ring is arranged on the outer end face of the elastic clamping head. The first-stage sealing ring and the second-stage sealing ring abut against the water sealing ring during docking to form a secondary seal, and an O-ring is provided between the elastic clamping head seat and the water docking fixing plate.

Images