Water-cooled constant pressure equipment following batteries with different thicknesses

Abstract

To provide a water-cooled constant pressure equipment following batteries with different thicknesses to ensure the stability and reliability of a charging and discharging process in the manufacturing of lithium batteries.SOLUTION: A water-cooled constant pressure equipment includes a rack assembly 1, a needle plate assembly 2, a constant pressure tray assembly 3, a movement mechanism assembly 4, a peripheral assembly, a submerged fire extinguishing assembly, and a constant pressure assembly 7. The tray is transported to a charge / discharge position by external feeding equipment, and when the tray reaches a predetermined position, the movement mechanism assembly moves upward and a matching block and a matching head automatically perform correct alignment, so that a probe and a battery pole can be quickly aligned with each other at a correct position. When a fire occurs in the battery, the battery is submerged in a submerged fire extinguishing assembly to achieve the purpose of extinguishing the fire.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention belongs to the field of battery manufacturing technology, and specifically relates to a water-cooled constant-pressure device driven by batteries with different thicknesses.

Background Art

[0002] In order to ensure the stability and reliability of the charging and discharging process of lithium batteries, it is necessary to pay attention to the following three points. First, it is necessary to ensure the stability of the crimping between the battery terminal and the probe, that is, to ensure that the projection positions of the probe and the lithium battery terminal overlap in the vertical direction. Second, stable control and adjustable pressure method in the charging process. Third, the handling of abnormal situations occurring during the long-term charging and discharging process of the battery.

[0003] Regarding the first point, if there is a deviation in the positions of the probe and the lithium battery terminal, the probe cannot effectively contact the lithium battery terminal, which will affect the charging and discharging of the lithium battery. Theoretically, when the probe row and the lithium battery row are facing each other, the lithium battery faces the position of the corresponding probe. However, there are errors in the thickness of the lithium battery, there are also errors in the dimensions of the separator, and there are also thickness errors caused by the expansion of the lithium battery during charging and discharging. In particular, the above errors are accumulated in the lithium battery row, and the deviation between the lithium battery relatively far from the contact point and the corresponding probe may reach a degree that affects the effective progress of the charging and discharging of the lithium battery. Currently, although the outer dimensions of the thickness vary according to the design definitions of each battery manufacturer, all existing equipment has a fixed structure. Therefore, if the thickness is different, the equipment must be newly designed and manufactured, and it cannot flexibly adapt to batteries of other thicknesses.

[0004] Regarding the second point, currently, the constant pressure mechanism used in the charging and discharging process usually partitions the battery with a plurality of separators. Before inserting the battery, the separators are separated from each other by a certain distance, and then the battery is inserted between adjacent separators. By applying pressure, the separators are brought closer to each other to restrain the battery. However, the pressure applied in such a manner is usually quite large, for example, it requires a pressure of several tons. In the high-power and high-energy charging and discharging process of the battery, the internal electrolyte undergoes a chemical reaction under the influence of the current, and the outer surface battery case expands or contracts under the influence of the internal temperature rise environment, which may cause uneven charging and discharging of the battery. Once the pressure drops or the expansion amount becomes huge, a situation where the safety performance of the battery cannot be controlled and feedback cannot be provided may occur.

[0005] Regarding the third point, during the charging and discharging process of the battery, it is inevitable that abnormalities and safety accidents occur in the battery due to long-term charging and discharging with a large current. Currently, most ordinary charging and discharging equipment adopts a water-gas integrated fire extinguishing equipment and a sprinkler fire extinguishing equipment to handle the abnormal situation of the battery. Among them, in the case of adopting the water-gas integrated fire extinguishing equipment to handle the abnormality of the battery, fire extinguishing gas is released, and after the fire goes out, the battery is still exposed to the air again, so there is still a possibility of re-ignition, and there is also the disadvantage that the cost of the fire extinguishing gas is quite high. In the case of adopting the sprinkler fire extinguishing equipment to handle the abnormality of the battery, after an accident occurs at a certain position, when the sprinkler sprays water on the probe, that position cannot continue production for a short period of time, which affects the use of the entire series of equipment, so it has a very large impact on the production efficiency and safety of battery manufacturers.

Summary of the Invention

[0006] In order to solve the above technical problems existing in the prior art, the present invention presents a water-cooled constant-pressure device driven by batteries of different thicknesses for an automatic expansion and contraction adjustment device of batteries with different thicknesses. By grouping probes and fitting them with the batteries, the two are driven to be positioned, removing the cumulative dimensional error caused by the expansion and dimensional error of the lithium battery, and installing a constant-pressure assembly to solve the problem in the prior art that a situation where the safety of the battery cannot be controlled and feedback cannot be provided during pressure down or extreme expansion is formed. In addition, by installing a water tank, technical problems such as the risk of re-ignition of the battery existing in the current sprinkler equipment and the inability to normally use the position are also solved.

[0007] In the present invention, in order to solve its technical problems, the following technical methods are adopted. The water-cooled constant-pressure device driven by batteries of different thicknesses is a rack assembly (1) including an upper frame (10) and a bottom frame (11) installed horizontally, wherein the bottom frame (11) is located below the upper frame (10) and is fixedly connected by a plurality of support columns (13). The extension direction of the long side of the upper frame is defined as the left-right direction, and the extension direction of the short side of the upper frame is defined as the front-back direction. Its features are as follows. Below the upper frame (10), a lifting cylinder mounting plate (102) is fixedly installed. The lower part of the lifting cylinder mounting plate (102) is engaged with a movement mechanism assembly (4). Between the upper frame (10) and the bottom frame (11), a plurality of movement shafts (12) are arranged. A needle plate assembly (2) is installed below the upper frame (10), and above each working position, there is a corresponding set of needle plate assemblies (2), which includes a power module member (20) and a type-different needle plate member (21). The type-different needle plate member (21) is located below the power module member (20). The type-different needle plate member (21) includes a probe front fixing plate (2109-1), a probe rear fixing plate (2109-2), a probe left fixing plate (2110-1), and a probe right fixing plate (2110-2). The probe front fixing plate (2109-1), the probe rear fixing plate (2109-2), the probe left fixing plate (2110-1), and the probe right fixing plate (2110-2) jointly form a housing structure in a surrounding manner. Slide rails (2102) are installed respectively below the probe left fixing plate (2110-1) and the probe right fixing plate (2110-2). On the housing structure, a number of probe sets (2100) are arranged at intervals along the front-rear direction. Each probe set (2100) includes a probe telescopic cylinder (21002) and a probe telescopic cylinder mounting plate (21009) corresponding one-to-one. The probe assembly is mounted at the bottom of the probe telescopic cylinder mounting plate (21009), and under the action of the probe telescopic cylinder (21002), the probe assembly can move up and down along the guide shaft (21004). At positions corresponding to the slide rails (2102) on both sides of the probe telescopic cylinder mounting plate (21009), sliders (21000) engaging with the slide rails (2102) are provided. A number of probe telescopic cylinder mounting plates (21009) are slidably installed on the slide rails (2102) and are aligned in the front-rear direction. At both ends of the bottom of the probe telescopic cylinder mounting plate (21009), engaging blocks (21007) are vertically installed respectively. Adjacent probe telescopic cylinder mounting plates (21009) are connected by a connecting spring (21008). Inside the housing structure of the probe rear fixing plate (2109-2), a reset cylinder (2107) is installed along the front-rear direction and is slidably installed on the slide rail (2102).The reset cylinder (2107) horizontally pushes the reset cylinder fixed plate (2108) to move the probe set (2100), The constant-pressure tray assembly (3) includes a tray bottom frame (303) horizontally installed below the needle plate assembly (2). A front fixing plate (300) and a rear fixing plate (307) are respectively installed at the front and rear of the tray bottom frame (303). A number of liner guide shafts (308) are installed at intervals from top to bottom between both ends of the front fixing plate (300) and the rear fixing plate (307). The tray liner plate (302) can move back and forth along the liner guide shaft (308). The front fixing plate (300), the rear fixing plate (307), and a number of liner guide shafts (308) jointly form a tray frame so as to surround. Inside the tray frame, a number of tray liner plates (302) are horizontally arranged at intervals along the front-rear direction. A pressing plate (304) and a screw (306) are installed in the tray frame between the tray liner plate (302) and the rear fixing plate (307). Among them, the tray liner plate (302) close to the rear fixing plate (307) is used to place the tray pressing plate (304), and the remaining tray liner plates (302) are used to place the battery (301). A trapezoidal nut (305) is horizontally attached to the center position of the rear fixing plate (307). One end of the screw (306) is connected to the tray pressing plate (304), and the other end penetrates the trapezoidal nut (305) and exposes outside the tray frame and can rotate within the trapezoidal nut (305). By rotating the screw (306), the initial interval between the tray liner plates (302) is adjusted. When expansion occurs during the charging process of the battery (301), the tray liner plate (302) can move back and forth along the liner guide shaft (308). The screw (306) horizontally presses the pressing plate (304) to apply a horizontally forward force. On the surfaces of both ends of the tray liner plate (302) facing the fitting block (21007), fitting heads (311) for docking with the fitting block (21007) are respectively installed. When the battery (301) expands, the fitting block (21007) follows the fitting head (311), and at the same time, the entire probe set (2100) moves along the slide rail (2102), ensuring the accuracy of the alignment between the current probe (21003) and the battery's pole post. The motion mechanism assembly (4) is used to place the constant-pressure tray assembly (3) and can move up and down along the motion axis (12). The submerged fire extinguishing assembly (6) is located between the constant-pressure tray assembly (3) and the bottom frame (11). When the battery catches fire, the battery (301) submerges into the submerged fire extinguishing assembly (6) to achieve the purpose of fire extinguishing. The constant-pressure assembly (7) is located on one side of the rack assembly (1) and engages with the tray pressing plate (304) to perform real-time adjustment of the pressure received by the battery (301), ensuring that the pressure received by the battery remains constant after the battery (301) expands. Furthermore, the motion mechanism assembly (4) includes an upper-middle frame member (40) and a lower-middle frame member (41). The upper-middle frame member (40) and the lower-middle frame member (41) are respectively slidably mounted on the motion axis (12). Among them, The upper-middle frame member (40) is located above the lower-middle frame member (41) and is used for positioning the constant-pressure tray assembly (3) and docking the constant-pressure tray assembly (3) with the needle plate assembly (2). The lower-middle frame member (41) is horizontally installed above the bottom frame (11) and is used for taking in and out the materials of the constant-pressure tray assembly (3).

[0008] Furthermore, the above-mentioned submerged fire extinguishing assembly (6) includes a water tank body (601) and an extinguishing cylinder (4013). The above-mentioned extinguishing cylinder (4013) is installed on the rising cylinder fixing plate (4015), and the piston rod end of the above-mentioned extinguishing cylinder (4013) is fixed on the second cylinder mounting joint (4007). The upper end of the above-mentioned motion axis (12) is fixedly installed on the upper frame (10), and the lower end is fixedly installed inside the water tank body (601). The above-mentioned extinguishing cylinder (4013) slides the motion mechanism assembly (4) up and down along the motion axis (12). When the battery catches fire, under the action of the extinguishing cylinder (4013), the motion mechanism assembly (4) submerges the battery (301) into the water tank body (601) to achieve the purpose of fire extinguishing.

[0009] Furthermore, the constant-pressure assembly (7) includes a mounting base plate (75) installed horizontally on the ground. The long side of the mounting base plate (75) is defined as the left-right direction, and the short side of the mounting base plate (75) is defined as the front-back direction. Four support columns (76) are vertically installed on the mounting base plate (75). An electric cylinder mounting plate (77) is horizontally installed at the upper end of the support column (76). A servo electric cylinder (71) is installed on the electric cylinder mounting plate (77). The servo electric cylinder (71) is connected to a pressure plate (78) via an electric cylinder output shaft. Four pressure output shafts (74) are installed on the side of the pressure plate (78) farther from the servo electric cylinder (71). The installation positions of the pressure output shafts (74) correspond one-to-one with the restraint holes on the trapezoidal nut (305). One end of the pressure output shaft (74) is fixedly installed on the pressure plate (78), and the other end passes through the restraint hole and is connected to the tray pressing plate (304). A pressure sensor (73) is installed between the electric cylinder output shaft and the pressure plate (78). The pressure sensor (73) is used to monitor in real time the pressure received by the battery (301). By adjusting in real time the pressure received by the battery (301) through the servo electric cylinder (71), it is ensured that the pressure received by the battery is constant after the battery expands.

[0010] Furthermore, a plurality of sets of feed rollers (410) are installed at intervals along the front-back direction on the middle and lower frame member (41). The front end of the middle and lower frame member (41) is the equipment supply side, and a tray support column (413) is vertically installed at the rear end of the middle and lower frame member (41). The upper and middle frame member (40) has a symmetric structure and has two working positions on the left and right. Two constant-pressure tray assemblies (3) can be placed simultaneously. Tray guide blocks (4000) for assisting in positioning the constant-pressure tray assembly (3) are installed at each working position. A tray positioning pin (4010) is installed on the upper and middle frame member (40). The tray positioning pin (4010) engages with the positioning hole (309) on the tray bottom frame (303) to achieve the positioning of the constant-pressure tray assembly (3).

[0011] Furthermore, a lifting cylinder (4012) is installed below the lifting cylinder mounting plate (102), and the end of the piston rod of the lifting cylinder (4012) is fixed on the lifting cylinder fixing plate (4015).

[0012] Furthermore, the probe assembly includes a probe mounting plate (21005). On the probe mounting plate (21005), a current probe (21003) used for charging and discharging the battery and a temperature probe (21006) for monitoring the battery temperature are vertically installed. A probe telescopic cylinder (21002) is installed on the central axis of the probe telescopic cylinder mounting plate (21009). The end of the piston rod of the probe telescopic cylinder (21002) is fixed on the probe mounting plate (21005). And two guide shafts (21004) are vertically installed on the probe mounting plate (21005). The guide shafts (21004) vertically penetrate through the bearings (21001) on the probe telescopic cylinder mounting plate (21009), and under the action of the probe telescopic cylinder (21002), the probe mounting plate (21005) can be moved up and down along the guide shafts (21004). A slider (21000) is installed on the probe telescopic cylinder mounting plate (21009). By engaging the slider (21000) with the slide rail (2102), the probe set (2100) can be moved back and forth along the slide rail (2102).

[0013] Furthermore, on the front and rear sides of the middle upper frame member (40), a number of tray guide blocks (4000) are installed at intervals along the left - right direction. The tray guide blocks (4000) are vertically mounted on the middle upper frame member (40), and position the constant - pressure tray assembly (3) from three directions: front, rear, and left.

[0014] Furthermore, engaging grooves (310) that engage with the liner guide shafts (308) are respectively opened at both ends of the tray liner plate (302), and can move back and forth along the liner guide shafts (308). The tray bottom frame (303) is fixedly installed on the lowermost liner guide shaft (308).

[0015] Furthermore, the piston rod end of the reset cylinder (2107) is connected onto a reset cylinder fixing plate (2108) via a connection angle member (2106), and the reset cylinder fixing plate (2108) is slidably installed on the slide rail (2102).

[0016] The beneficial effects of the present invention are as follows. 1. The tray is conveyed to the charge and discharge position by an external feeding facility. When the tray reaches a predetermined position, the movement mechanism assembly moves upward, and is automatically and correctly aligned by the engagement block of the needle plate assembly and the tray engagement head, so that the probe and the battery terminal can be quickly and correctly aligned. 2. The present invention is compatible with a fuel cell, and can perform self-adaptive alignment with an error of 0 to 10 mm, and realizes that the probe is driven by the expansion of the battery when the battery expands in a constrained state. 3. In the present invention, it prevents the surface of the battery terminal from being damaged during the passive process of the battery, meets the indentation requirement of the appearance, and calibrates the alignment between the battery terminal and the needle plate in real time, so it can be applied to batteries with different material thicknesses to enable good contact between the probe and the battery terminal. At the same time, it eliminates the influence of the displacement between the battery terminal and the probe caused by the expansion during the charge and discharge process of the battery on the charge and discharge, and ensures the safety during the charge and discharge process of the battery. 4. The present invention can provide a constant pressure to the battery during the charging and discharging process of the battery. Specifically, after the battery is placed in the tray, it is transported to the charging and discharging position, and pressure is applied based on a predetermined pressure of the process. The pressure sensor monitors the pressure in real time to ensure that in the expansion and contraction during the charging and discharging process of the battery, the pressure is adjusted in real time so as to reach the set value, preventing the applied pressure from becoming unstable due to the lack of pressure feedback during the charging and discharging process of the battery, and preventing a discrepancy from occurring in the gap between the tray on which the battery is placed and the separator regardless of thermal expansion or cold contraction during the charging and discharging process of the battery, which would cause the charging and discharging capacity of the battery to be non-uniform and the battery life to vary. In this device, the consistency and stability of the battery pressure are guaranteed, and by monitoring and adjusting the pressure in real time, the battery is stabilized and made consistent. 5. The present invention solves the risk of re-ignition of the battery existing in the conventional fire extinguishing method by moving the tray on which the battery is placed downward along the movement axis and submerging it into the water tank body. It has low cost, and moreover, the probe is not affected, maintaining continuous production at the position and not affecting the use of the entire row of equipment, guaranteeing the production efficiency and safety of battery manufacturers.

Brief Description of the Drawings

[0017]

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Description of Reference Numerals

[0018] 1 Rack assembly 10 Upper frame 11 Bottom frame 12 Motion axis 13 Support column 14 Cooler 100 Smoke exhaust fan 101 Support base 102 Rising cylinder mounting plate 103 Needle plate mounting pulley 104 Needle plate pre-fixing plate 105 Needle plate post-fixing plate 106 Angle pipe rack 2 Needle plate assembly 20 Power module member 21 Needle plate member with different types 200 Front mounting plate 201 Right mounting plate 202 Circuit board 203 Hook 204 Module heat dissipation fan 205 Left mounting plate 206 Rear mounting plate 207 Needle plate fixing slide rail 2100 Probe set 2101 Cylinder bus 2102 Slide rail 2103 Blocking block 2104 Guide block 2105 Ambient thermometer 2106 Connection angle member 2107 Reset cylinder 2108 Reset cylinder fixing plate 2109-1 Probe pre-fixing plate 2109-2 Probe post-fixing plate 2110-1 Probe left fixing plate 2110-2 Probe right fixing plate 2111 Slide rail fixing plate 21000 Slider 21001 Bearing 21002 Probe telescopic cylinder 21003 Current probe 21004 Probe mounting plate guide shaft 21005 Probe mounting plate 21006 Temperature probe 21007 Fitting block 21008 Connection spring 21009 Probe Telescopic Cylinder Mounting Plate 3 Constant Pressure Tray Assembly 300 Front Fixed Plate 301 Battery 302 Tray Liner Plate 303 Tray Bottom Frame 304 Pushing Plate 305 Trapezoidal Nut 306 Screw 307 Rear Fixed Plate 308 Liner Guide Shaft 309 Positioning Hole 310 Engagement Groove 311 Fitting Head 4 Movement Mechanism Assembly 40 Upper Middle Frame Member 41 Lower Middle Frame Member 4000 Tray Guide Block 4001 Tray Radiator Fan 4002 Feed Cylinder Fixed Plate 4003 Tray Vertical Position Sensor 4004 Infrared Temperature Sensor 4005 Tray Clamp Cylinder 4006 Second Linear Bearing 4007 Second Cylinder Mounting Joint 4008 Movement Mechanism Stopper 4009 Tray Cable Reader 4010 Tray Positioning Pin 4011 Feed Cylinder 4012 Lifting Cylinder 4013 Disappearing Cylinder 4014 Cable Drag Chain 4015 Lifting Cylinder Fixed Plate 410 Feed Roller 411 Tray Horizontal Position Sensor 412 Support Column Fixed Member 413 Tray Support Column 414 First Linear Bearing 415 First Cylinder Mounting Joint 416 Tray Support Nylon Block 5 Peripheral Assembly 50 Integrated Peripheral Rack 51 Touch Screen 53 Electric Cabinet 54 Safety Gate 55 Alarm Lamp 6 Submerged Fire Extinguishing Assembly 601 Water Tank Body 602 Water Intake 603 Overflow Outlet 604 Water Outlet 605 Connection Board 7 Constant Pressure Assembly 71 Servo Electric Cylinder 73 Pressure Sensor 74 Pressure Output Shaft 75 Mounting Base Plate 76 Support Column 77 Servo Mounting Plate 78 Pressure Plate

Best Mode for Carrying Out the Invention

[0019] Hereinafter, with reference to the drawings, specific embodiments in the examples of the present invention will be described in detail. It should be understood that the specific embodiments described herein are only for explaining and interpreting the examples of the present invention, and not for limiting the examples of the present invention.

[0020] It should be noted that, under a non - contradictory situation, the examples and features in the examples in the present invention can be combined with each other.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal direction", "lateral direction", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial direction", "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of making it easier to describe the present invention and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation and be configured and operated in a specific orientation, and should not be understood as a limitation to the present invention.

[0022] Also, the terms "first" and "second" are only used for the purpose of describing the object, and should not be understood as indicating, implying, or implicitly indicating the relative importance or the number of technical features pointed to. Therefore, the features limited by "first" and "second" can clearly or implicitly include at least one of the features. In the description of the present invention, "a plurality" means at least two, for example, two, three, etc., unless there is a clear and specific limitation otherwise.

[0023] In the present invention, unless there are clear and specific regulations and limitations otherwise, terms such as "mounting", "connecting", "connecting", "fixing", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one. It may be a mechanical connection, an electrical connection, or mutual communication. It may be a direct connection, an indirect connection through an intermediate medium, or the communication inside two elements or the interaction relationship between two elements, except when there are clear and specific limitations otherwise. A person skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation.

[0024] In the present invention, unless otherwise clearly defined and limited, when the first feature is "above" or "below" the second feature, the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate medium. Further, when the first feature is "above", "above", or "upper surface" of the second feature, the first feature may be directly above or obliquely above the second feature, or may only indicate that the horizontal height of the first feature is higher than that of the second feature. When the first feature is "below", "below", or "lower surface" of the second feature, the first feature may be directly below or obliquely below the second feature, or may only indicate that the horizontal height of the first feature is lower than that of the second feature.

[0025] In the description of this specification, descriptions such as referring to "one embodiment", "several embodiments", "illustration", "specific illustration", or "several illustrations" of terms are combined with the specific features, structures, materials, or features described in the embodiment or illustration, and mean being included in at least one embodiment or illustration of the present invention. In this specification, the schematic expressions of the above terms do not necessarily have to be for the same embodiment or illustration. Further, the specific features, structures, materials, or features described can be combined in an appropriate form in one or more embodiments or illustrations. Also, in situations where there is no contradiction, those skilled in the art can combine or combine different embodiments or illustrations described in this specification and the features of different embodiments or illustrations.

[0026] Hereinafter, with reference to the drawings, the present invention will be described in detail in conjunction with exemplary embodiments.

[0027] As shown in FIGS. 1 to 23, the water-cooled constant-pressure equipment driven by the batteries with different thicknesses of the present invention is A rack assembly 1 including a horizontally installed upper frame 10 and a bottom frame 11, where the bottom frame 11 is located below the upper frame 10 and is fixedly connected by a plurality of support columns 13. Define the extending direction of the long side of the upper frame as the left - right direction and the extending direction of the short side of the upper frame as the front - rear direction. Below the upper frame 10, a lifting cylinder mounting plate 102 is fixedly installed. The lower part of the lifting cylinder mounting plate 102 is engaged with a motion mechanism assembly 4. A plurality of motion shafts 12 are arranged between the upper frame 10 and the bottom frame 11. A needle plate assembly 2 is installed below the upper frame 10. Above each working position, there is a set of needle plate assemblies 2 corresponding respectively. It includes a power module member 20 and a type - different needle plate member 21. The type - different needle plate member 21 is located below the power module member 20. The power module member 20 includes a front mounting plate 200, a rear mounting plate 206, a left mounting plate 205 and a right mounting plate 201. The front mounting plate 200, the rear mounting plate 206, the left mounting plate 205 and the right mounting plate 201 are formed to jointly surround a storage space for accommodating a circuit board 202. A number of circuit boards 202 are arranged at intervals along the front - rear direction in the storage space. Needle plate fixing slide rails 207 are installed above the left mounting plate 205 and the right mounting plate 201 respectively. The type-different needle plate member 21 includes a probe front fixed plate 2109-1, a probe rear fixed plate 2109-2, a probe left fixed plate 2110-1, and a probe right fixed plate 2110-2. The probe front fixed plate 2109-1, the probe rear fixed plate 2109-2, the probe left fixed plate 2110-1, and the probe right fixed plate 2110-2 jointly form a housing structure so as to surround. Slide rails 2102 are respectively installed below the probe left fixed plate 2110-1 and the probe right fixed plate 2110-2. On the housing structure, a number of probe sets 2100 are arranged at intervals along the front-rear direction. Each probe set 2100 includes a probe telescopic cylinder 21002 and a probe telescopic cylinder mounting plate 21009 that corresponds one-to-one. The probe assembly is attached to the bottom of the probe telescopic cylinder mounting plate 21009. And under the action of the probe telescopic cylinder 21002, the probe assembly can move up and down along the guide shaft 21004. Sliders 21000 that engage with the slide rails 2102 are provided at positions corresponding to the slide rails 2102 on both sides of the probe telescopic cylinder mounting plate 21009. A number of probe telescopic cylinder mounting plates 21009 are slidably installed on the slide rails 2102 and are aligned in the front-rear direction. Engagement blocks 21007 are vertically installed at both ends of the bottom of the probe telescopic cylinder mounting plate 21009. Adjacent probe telescopic cylinder mounting plates 21009 are connected by a connecting spring 21008. The constant-pressure tray assembly 3 includes a tray bottom frame 303 horizontally installed below the needle plate assembly 2. A front fixing plate 300 and a rear fixing plate 307 are respectively installed at the front and rear of the tray bottom frame 303. A number of liner guide shafts 308 are arranged at intervals from top to bottom between both ends of the front fixing plate 300 and the rear fixing plate 307. The tray liner plate 302 can move back and forth along the liner guide shaft 308. The front fixing plate 300, the rear fixing plate 307 and a number of liner guide shafts 308 jointly form a tray frame so as to surround. A number of tray liner plates 302 are horizontally arranged at intervals along the front-rear direction inside the tray frame. A push plate 304 and a screw 306 are installed in the tray frame between the tray liner plate 302 and the rear fixing plate 307. Among them, the tray liner plate 302 close to the rear fixing plate 307 is used to place the tray push plate 304, and the remaining tray liner plates 302 are used to place the battery 301. A trapezoidal nut 305 is horizontally attached to the central position of the rear fixing plate 307. One end of the screw 306 is connected to the push plate 304, and the other end penetrates the trapezoidal nut 305 and is exposed outside the tray frame, and can rotate in the trapezoidal nut 305. By rotating the screw 306, the initial interval between the tray liner plates 302 is adjusted. When expansion occurs during the charging process of the battery 301, the tray liner plate 302 can move back and forth along the liner guide shaft 308. The screw 306 horizontally pushes the push plate 304 to apply a horizontally forward force. Matching heads 311 for docking with the matching block 21007 are respectively installed on the surfaces of both ends of the tray liner plate 302 facing the matching block 21007. When the battery 301 expands, the matching block 21007 is driven by the matching head 311, and at the same time the entire probe set 2100 moves along the slide rail 2102, so as to ensure the accuracy of the alignment between the current probe 21003 and the battery's terminal post. The constant-pressure tray assembly 3 includes a tray bottom frame 303 horizontally installed below the needle plate assembly 2. A front fixing plate 300 and a rear fixing plate 307 are respectively installed at the front and rear of the tray bottom frame 303. A number of liner guide shafts 308 are installed at intervals from top to bottom between both ends of the front fixing plate 300 and the rear fixing plate 307.The trailer liner plate 302 can move back and forth along the liner guide shaft 308. The front fixing plate 300, the rear fixing plate 307 and several liner guide shafts 308 jointly form a tray frame. Inside the tray frame, several trailer liner plates 302 are horizontally arranged at intervals along the front - rear direction. Inside the tray frame between the trailer liner plate 302 and the rear fixing plate 307, a push plate 304 and a screw 306 are installed. Among them, the trailer liner plate 302 close to the rear fixing plate 307 is used to place the tray push plate 304, and the remaining trailer liner plates 302 are used to place the battery 301. A trapezoidal nut 305 is horizontally mounted at the central position of the rear fixing plate 307. One end of the screw 306 is connected to the push plate 304, and the other end penetrates through the trapezoidal nut 305 and exposes outside the tray frame and can rotate within the trapezoidal nut 305. By rotating the screw 306, the initial interval between the trailer liner plates 302 is adjusted. When expansion occurs during the charging process of the battery 301, the trailer liner plate 302 can move back and forth along the liner guide shaft 308. The screw 306 horizontally pushes the push plate 304 to apply a horizontally forward force. On the surfaces of both ends of the trailer liner plate 302 facing the engagement block 21007, engagement heads 311 for docking with the engagement block 21007 are installed respectively. When the battery 301 expands, the engagement block 21007 is driven by the engagement head 311, and at the same time, the entire probe set 2100 moves along the slide rail 2102, ensuring the accuracy of the alignment between the current probe 21003 and the battery terminal post. The movement mechanism assembly (4) is used to arrange the constant - pressure tray assembly (3) and can move up and down along the movement shaft (12). The submerged fire - extinguishing assembly (6) is located between the constant - pressure tray assembly (3) and the bottom frame (11). When the battery catches fire, the battery (301) submerges into the submerged fire - extinguishing assembly (6) to achieve the purpose of fire - extinguishing. The constant pressure assembly (7) is located on one side of the rack assembly (1) and engages with the tray pressing plate (304) to perform real-time adjustment of the pressure received by the battery (301), ensuring that the pressure received by the battery remains constant after the battery (301) expands.

[0028] In an embodiment, the motion mechanism assembly 4 includes an upper middle frame member 40 and a lower middle frame member 41. The upper middle frame member 40 and the lower middle frame member 41 are respectively slidably mounted on the motion axis 12. Among them, The upper middle frame member 40 is located above the lower middle frame member 41 and is used to position the constant pressure tray assembly 3 and to dock the constant pressure tray assembly 3 with the needle plate assembly 2. The lower middle frame member 41 is horizontally installed above the bottom frame 11 and is used to handle the loading and unloading of the material of the constant pressure tray assembly 3.

[0029] In an embodiment, the above-mentioned submerged fire extinguishing assembly (6) includes a water tank body (601) and an extinguishing cylinder (4013). The above-mentioned extinguishing cylinder (4013) is installed on the rising cylinder fixing plate (4015), and the piston rod end of the above-mentioned extinguishing cylinder (4013) is fixed on the second cylinder mounting joint (4007). The upper end of the above-mentioned motion axis (12) is fixedly installed on the upper frame (10), and the lower end is fixedly installed inside the water tank body (601). The above-mentioned extinguishing cylinder (4013) slides the motion mechanism assembly (4) up and down along the motion axis (12). When the battery catches fire, the motion mechanism assembly (4) submerges the battery (301) into the water tank body (601) under the action of the extinguishing cylinder (4013) to achieve the purpose of fire extinguishing.

[0030] Specifically, a water intake (602) is installed on the above-mentioned water tank body (601). The above-mentioned water intake (602) is connected to an external pipeline to store water in the water tank body (601). An outlet (604) for discharging the water in the water tank body (601) is installed at the bottom of the above-mentioned water tank body (601).

[0031] Specifically, an overflow port (603) is installed at the upper end of the water tank body (601) to prevent the liquid level of the water tank body (601) from becoming too high.

[0032] Specifically, a connection plate (605) is installed at the bottom inside the water tank body (601), and the lower end of the moving shaft (12) is fixedly installed on the connection plate (605).

[0033] Specifically, a smoke sensor is installed on the motion mechanism assembly (4), the smoke sensor is connected to the system controller, and after the system controller receives the information of the smoke sensor, it transmits a fire alarm and controls the movement of the extinguishing cylinder (4013).

[0034] In an embodiment, the constant pressure assembly (7) includes a mounting base plate (75) installed horizontally on the ground. The long side of the mounting base plate (75) is defined as the left - right direction, and the short side of the mounting base plate (75) is defined as the front - back direction. Four support columns (76) are vertically installed on the mounting base plate (75), an electric cylinder mounting plate (77) is horizontally installed at the upper end of the support column (76), a servo electric cylinder (71) is installed on the electric cylinder mounting plate (77), the servo electric cylinder (71) is connected to a pressure plate (78) through an electric cylinder output shaft. Four pressure output shafts (74) are installed on the side of the pressure plate (78) far from the servo electric cylinder (71). The installation positions of the pressure output shafts (74) correspond one - to - one with the restraint holes on the trapezoidal nut (305). One end of the pressure output shaft (74) is fixedly installed on the pressure plate (78), and the other end passes through the restraint hole and is connected to the tray pressing plate (304). A pressure sensor (73) is installed between the electric cylinder output shaft and the pressure plate (78). The pressure sensor (73) is used to monitor the pressure received by the battery (301) in real - time, and by adjusting the pressure received by the battery (301) in real - time through the servo electric cylinder (71), it ensures that the pressure received by the battery is constant after the battery (301) expands.

[0035] In one embodiment, a plurality of sets of feed rollers 410 are installed on the middle and lower frame member 41 at intervals along the front-rear direction. The front end of the middle and lower frame member 41 is the equipment supply side, and a tray support column 413 is vertically installed at the rear end of the middle and lower frame member 41. The upper and middle frame member 40 has a symmetric structure and has two working positions on the left and right. Two constant-pressure tray assemblies 3 can be placed simultaneously. At each working position, a tray guide block 4000 for assisting in positioning the constant-pressure tray assembly 3 is installed. A tray positioning pin 4010 is installed on the upper and middle frame member 40. The tray positioning pin 4010 engages with the positioning hole 309 on the tray bottom frame 303 to realize the positioning of the constant-pressure tray assembly 3.

[0036] In one embodiment, a lifting cylinder 4012 is installed below the lifting cylinder mounting plate 102. The piston rod end of the lifting cylinder 4012 is fixed on the lifting cylinder fixing plate 4015. An extinguishing cylinder 4013 is mounted on the lifting cylinder fixing plate 4015. The piston rod end of the extinguishing cylinder 4013 is fixed on the second cylinder mounting joint 4007.

[0037] In one embodiment, the probe assembly includes a probe mounting plate 21005. A current probe 21003 used for charging and discharging the battery and a temperature probe 21006 for monitoring the battery temperature are vertically installed on the probe mounting plate 21005. A probe telescopic cylinder 21002 is installed on the central axis of the probe telescopic cylinder mounting plate 21009. The piston rod end of the probe telescopic cylinder 21002 is fixed on the probe mounting plate 21005. Two guide shafts 21004 are vertically installed on the probe mounting plate 21005. The guide shafts 21004 vertically penetrate the bearings 21001 on the probe telescopic cylinder mounting plate 21009, and the probe mounting plate 21005 can be moved up and down along the guide shafts 21004 under the action of the probe telescopic cylinder 21002.

[0038] In one embodiment, a slider 21000 is installed on the probe telescopic cylinder mounting plate 21009, and the slider 21000 engages with the slide rail 2102 so that the probe set 2100 can be moved back and forth along the slide rail 2102.

[0039] In one embodiment, hooks 203 for fixing the needle plate assembly 2 to the upper frame 10 are installed on the front mounting plate 200 and the rear mounting plate 206 respectively. A module heat dissipation fan 204 for dissipating heat from the circuit board 202 is installed on the left mounting plate 205, and constriction holes for facilitating air flow are arranged at intervals along the front-rear direction on the right mounting plate 201.

[0040] In one embodiment, a plurality of tray guide blocks 4000 are installed at intervals along the left-right direction on the front and rear sides of the middle upper frame member 40. The tray guide blocks 4000 are vertically mounted on the middle upper frame member 40 and position the constant pressure tray assembly 3 from three directions: front, rear, and left.

[0041] In one embodiment, engaging grooves 310 that engage with the liner guide shafts 308 are respectively formed at both ends of the tray liner plate 302, and the tray liner plate 302 can move back and forth along the liner guide shafts 308. The tray bottom frame 303 is fixedly installed on the lowermost liner guide shaft 308.

[0042] In one embodiment, the piston rod end of the reset cylinder 2107 is connected to the reset cylinder fixing plate 2108 via a connecting corner member 2106, and the reset cylinder fixing plate 2108 is slidably installed on the slide rail 2102.

[0043] In one embodiment, both ends of a plurality of moving shafts 12 are vertically fixed between the bottom of the upper frame 10 and the top of the bottom frame 11 via support bases 101 respectively.

[0044] In one embodiment, coolers 14 are fixedly installed on both the left and right sides of the upper frame 10. The coolers 14 are fixed to both the left and right sides of the upper frame 10 by angle steel. The coolers 14 are externally connected to cold water and are used to lower the temperature inside the equipment and keep the temperature inside the equipment constant.

[0045] In one embodiment, a smoke exhaust fan 100 is installed on the upper frame 10 and is connected to an external smoke exhaust duct.

[0046] In one embodiment, on the side without the tray guide blocks 4000 at the left and right working positions, tray clamp cylinders 4005 are horizontally installed respectively, applying a horizontal force to the constant-pressure tray assembly 3 to prevent the constant-pressure tray assembly 3 from warping. A second linear bearing 4006 is vertically placed on the middle upper frame member 40 and is used to slidably cover the middle upper frame member 40 on the movement shaft 12. A feeding cylinder 4011 is installed on the central axis of the middle upper frame member 40. The feeding cylinder 4011 is fixedly installed on the middle upper frame member 40 through a feeding cylinder fixing plate 4002. Above the middle upper frame member 40, a set of tray heat dissipation fans 4001 are installed for each working position and are used for heat dissipation of the battery 301. On the middle upper frame member 40 corresponding to each working position, a tray vertical position sensor 4003, an infrared temperature sensor 4004, and a tray code reader 4009 are installed. A movement mechanism stopper 4008 is vertically installed on the middle upper frame member 40 to prevent the lifting cylinder 4012 from lifting the movement mechanism too much and colliding with the needle plate assembly 2.

[0047] In one embodiment, the tray support column 413 is vertically attached to the middle lower frame member 41 through a support column fixing member 412. A tray horizontal position sensor 411 and a tray support nylon block 416 are installed on the tray support column 413. A first linear bearing 414 is installed at a position corresponding to the movement shaft 12 on the middle lower frame member 41 and is used to slidably cover the middle lower frame member 41 on the movement shaft 12. A first cylinder mounting joint 415 for mounting the feeding cylinder 4011 is installed on the middle lower frame member 41.

[0048] In one embodiment, a cylinder bus 2101 is installed on the front fixing plate 2109-1 of the probe, and is used to merge the air pipes of the cylinders in the needle plate assembly 2 to make the wiring beautiful. The slide rail 2102 is attached below the left fixing plate 2110-1 and the right fixing plate 2110-2 of the probe via the slide rail fixing plate 2111. In front of the slide rail 2102, a blocking block 2103 is installed to prevent the probe set 2100 from falling off the slide rail 2102.

[0049] In one embodiment, the needle plate mounting pulley 103 is used to assist the needle plate assembly 2. As can be seen from FIG. 3d, there is a gap between the needle plate mounting pulley 103 and the square tube rack 106. The needle plate fixing slide rail 207 can be engaged in the gap. After the needle plate assembly 2 is pushed in by hand, the needle plate assembly 2 is fixed below the upper frame 10 by the front fixing plate 104 and the rear fixing plate 105 of the needle plate mounting.

[0050] In one embodiment, cable drag chains 4014 are installed on the left and right sides of the movement mechanism assembly 4, and are used to protect the wires extending from the movement mechanism assembly 4 when the movement mechanism assembly 4 moves up and down.

[0051] In one embodiment, an ambient thermometer 2105 for monitoring the ambient temperature is installed in the housing structure.

[0052] The present invention can be adapted to batteries with a maximum thickness of 44 mm and a minimum thickness of 36 mm. From FIG. 16, it can be seen that the mating blocks 21007 of the first 4 sets of probe sets 2100 are longer than the mating blocks 21007 of the last 5 sets of probe sets 2100. So when the constant pressure tray assembly 3 rises, the mating blocks 21007 of the first 4 sets of probe sets 2100 come into contact with the mating head 311 of the constant pressure tray assembly first. From FIG. 19, it can be seen that the first set of mating heads 311 of the constant pressure tray assembly 3 are always aligned with the centers of the mating blocks 21007 of the first set of probe sets 2100. From the second set of batteries, an error begins to occur between the mating head 311 and the mating block 21007, and it can be seen that the error becomes larger for the rear mating heads 311 and mating blocks 21007. The last 5 sets of probe sets 2100 move backward due to the pressing of the first 4 sets. Since the guide blocks 2104 are installed at the rearmost of all the probe sets 2100, at this time, the guide blocks 2104 come into contact with the mating heads 311 of the last set of trailer liner plates. Since the lifting cylinder 4012 continues to move the constant pressure tray assembly 3 upward, the guide blocks 2104 move backward. Connection springs 21008 are attached to both sides of the probe telescoping cylinder mounting plate 21009, connecting all the probe sets 2100 and the guide blocks 2104. When the guide blocks 2104 move backward, the last 5 probe sets 2100 are moved backward to substantially align the intervals between the probe sets 2100, and are used to align all the mating heads 311 and the mating blocks 21007. Current probes 21003 and temperature probes 21006 are vertically installed on the needle plate mounting plate, and are used to monitor the charging and discharging of the battery and the battery temperature to ensure the consistency of the temperature during the charging process of the battery.

[0053] As described above, the embodiments of the present invention have been shown and described. However, the above embodiments are exemplary and should not be construed as limitations on the present invention. It is understood that those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A water-cooled constant pressure equipment for batteries of different thicknesses, comprising a rack assembly (1) including a horizontally installed upper frame (10) and bottom frame (11), the bottom frame (11) being located below the upper frame (10) and fixedly connected thereto by a plurality of support columns (13), the extension direction of the long side of the upper frame being defined as the left-right direction, and the extension direction of the short side of the upper frame being defined as the front-rear direction, A lifting cylinder mounting plate (102) is fixed to the lower part of the upper frame (10), and the lower part of the lifting cylinder mounting plate (102) is engaged with the motion mechanism assembly (4), and a plurality of motion shafts (12) are arranged between the upper frame (10) and the bottom frame (11); A needle plate assembly (2) is installed below the upper frame (10), and each working position above corresponds to a set of needle plate assemblies (2), which include a power supply module member (20) and a different type needle plate member (21). The different type needle plate member (21) is located below the power supply module member (20). The different type needle plate member (21) includes a probe front fixing plate (2109-1), a probe rear fixing plate (2109-2), a probe left fixing plate (2110-1) and a probe right fixing plate (2110-2), and the probe The front fixing plate (2109-1), the rear probe fixing plate (2109-2), the left probe fixing plate (2110-1) and the right probe fixing plate (2110-2) together form a surrounding housing structure, and slide rails (2102) are installed below the left probe fixing plate (2110-1) and the right probe fixing plate (2110-2), respectively. A number of probe sets (2100) are arranged at intervals along the front-to-back direction on the housing structure, and each probe set (2100) corresponds one-to-one with a probe telescopic cylinder (21002). The probe assembly is attached to the bottom of the probe telescopic cylinder mounting plate (21009), and under the action of the probe telescopic cylinder (21002), the probe assembly can move up and down along the guide shaft (21004). At positions corresponding to the slide rails (2102) on both sides of the probe telescopic cylinder mounting plate (21009), sliders (21000) are provided to engage with the slide rails (2102). The probe telescopic cylinder mounting plate (21009) is slidably installed on the slide rail (2102) and aligned in the front-to-back direction, engagement blocks (21007) are vertically installed at both ends of the bottom of the probe telescopic cylinder mounting plate (21009), and adjacent probe telescopic cylinder mounting plates (21009) are connected by connecting springs (21008), and a reset cylinder (2107) is installed along the front-to-back direction on the side of the probe rear fixing plate (2109-2) facing the inside of the housing structure and is slidably installed on the slide rail (2102),The reset cylinder (2107) horizontally pushes the reset cylinder fixing plate (2108) to move the probe set (2100). The constant pressure tray assembly (3) includes a tray bottom frame (303) horizontally installed below the needle plate assembly (2). A front fixed plate (300) and a rear fixed plate (307) are installed at the front and rear of the tray bottom frame (303), respectively. A number of liner guide shafts (308) are installed at intervals from top to bottom between both ends of the front fixed plate (300) and the rear fixed plate (307). The tray liner plate (302) can move back and forth along the liner guide shaft (308). The front fixed plate (300), the rear fixed plate (307) and the number of liner guide shafts (308) are jointly A tray frame is formed so as to surround the battery (301), and a number of tray liner plates (302) are arranged horizontally in the front-rear direction inside the tray frame at intervals. A push plate (304) and a screw (306) are installed in the tray frame between the tray liner plates (302) and the rear fixing plate (307). Of these, the tray liner plate (302) closest to the rear fixing plate (307) is used to place the tray push plate (304), and the remaining tray liner plates (302) are used to place the battery (301), and the rear fixing plate (307) is used to place the tray push plate (304). A trapezoidal nut (305) is installed horizontally at the center position. One end of the screw (306) is connected to the tray pushing plate (304), and the other end passes through the trapezoidal nut (305) and is exposed outside the tray frame, and can rotate within the trapezoidal nut (305). By rotating the screw (306), the initial gap between the tray liner plates (302) can be adjusted. When the battery (301) expands during charging, the tray liner plate (302) can move back and forth along the liner guide shaft (308), and the screw (306) pushes the push plate (304) horizontally to apply a horizontal forward force, and on both ends of the tray liner plate (302) facing the engagement block (21007), engagement heads (311) are installed to dock with the engagement block (21007). When the battery (301) expands, the engagement block (21007) moves along the engagement head (311), and at the same time, the entire probe set (2100) moves along the slide rail (2102), thereby ensuring the accuracy of the alignment between the current probe (21003) and the battery pole. A motion mechanism assembly (4) is used to mount the constant pressure tray assembly (3) and can move up and down along a motion axis (12); The submerged fire extinguishing assembly (6) is located between the constant pressure tray assembly (3) and the bottom frame (11). When the battery catches fire, the battery (301) is submerged in the submerged fire extinguishing assembly (6), thereby achieving the purpose of extinguishing the fire. a constant pressure assembly (7) located on one side of the rack assembly (1) and engaging with the tray push plate (304) to make real-time adjustments to the pressure experienced by the battery (301) to ensure that the pressure experienced by the battery (301) is constant after the battery (301) expands; Water-cooled constant pressure equipment for batteries of different thicknesses.

2. The motion mechanism assembly (4) includes a middle upper frame member (40) and a middle lower frame member (41), and the middle upper frame member (40) and the middle lower frame member (41) are slidably mounted on the motion shaft (12), respectively; the upper middle frame member (40) is located above the lower middle frame member (41) and is used for positioning the constant pressure tray assembly (3) and for docking the constant pressure tray assembly (3) with the needle plate assembly (2), and the lower middle frame member (41) is horizontally installed above the bottom frame (11) and is used for loading and unloading materials from the constant pressure tray assembly (3); 2. A water-cooled constant pressure device for use with batteries of different thicknesses as claimed in claim 1.

3. The submerged fire extinguishing assembly (6) comprises a water tank body (601) and an extinguishing cylinder (4013), the extinguishing cylinder (4013) is installed on a rising cylinder fixing plate (4015), and the piston rod end of the extinguishing cylinder (4013) is fixed on a second cylinder mounting joint (4007), the upper end of the moving shaft (12) is fixed on the upper frame (10), and the lower end is fixed inside the water tank body (601), the extinguishing cylinder (4013) makes the moving mechanism assembly (4) slide up and down along the moving shaft (12), and when the battery ignites, the moving mechanism assembly (4) will sink the battery (301) into the water tank body (601) under the action of the extinguishing cylinder (4013) to achieve the purpose of extinguishing the fire.

4. The constant pressure assembly (7) includes a mounting base plate (75) horizontally installed on the ground, the long side of the mounting base plate (75) is defined as the left-right direction, and the short side of the mounting base plate (75) is defined as the front-rear direction. Four support columns (76) are vertically installed on the mounting base plate (75). An electric cylinder mounting plate (77) is horizontally installed at the upper end of the support column (76). A servo electric cylinder (71) is installed on the electric cylinder mounting plate (77). The servo electric cylinder (71) is connected to a pressure plate (78) through an electric cylinder output shaft. Four pressure output shafts (74) are installed on the side of the pressure plate (78) farther from the servo electric cylinder (71). The installation positions of the pressure output shafts (74) are as follows:

2. The water-cooled constant pressure equipment for batteries with different thicknesses as claimed in claim 1, characterized in that: the pressure output shaft (74) corresponds to the restraining hole on the trapezoidal nut (305) one-to-one; one end of the pressure output shaft (74) is fixed on the pressure plate (78) and the other end passes through the restraining hole to connect with the tray pressing plate (304); a pressure sensor (73) is installed between the electric cylinder output shaft and the pressure plate (78), the pressure sensor (73) is used to monitor the pressure received by the battery (301) in real time; and the pressure received by the battery (301) is adjusted in real time through the servo electric cylinder (71) to ensure that the pressure received by the battery is constant after the battery (301) expands.

5. A plurality of sets of feed rollers (410) are installed on the lower middle frame member (41) at intervals along the front-rear direction, the front end of the lower middle frame member (41) is the equipment supply side, and a tray support pillar (413) is vertically installed on the rear end of the lower middle frame member (41). The middle and upper frame member (40) has a symmetrical structure, has two working positions, one on the left and one on the right, and can simultaneously place two constant pressure tray assemblies (3). Each working position is provided with a tray guide block (4000) that assists in positioning the constant pressure tray assembly (3). A tray positioning pin (4010) is provided on the middle and upper frame member (40), and the tray positioning pin (4010) engages with a positioning hole (309) on the tray bottom frame (303) to realize positioning of the constant pressure tray assembly (3).

3. A water-cooled constant pressure device for use with batteries of different thicknesses as claimed in claim 2.

6. The water-cooled constant pressure equipment for use with batteries of different thicknesses as described in claim 5, characterized in that a rising cylinder (4012) is installed below the rising cylinder mounting plate (102), and the piston rod end of the rising cylinder (4012) is fixed on the rising cylinder fixing plate (4015).

7. The probe assembly includes a probe mounting plate (21005), on which a current probe (21003) for charging and discharging the battery and a temperature probe (21006) for monitoring the battery temperature are vertically installed; a probe telescopic cylinder (21002) is installed on the central axis of a probe telescopic cylinder mounting plate (21009), the piston rod end of the probe telescopic cylinder (21002) is fixed on the probe mounting plate (21005), and two guide shafts (21004) are vertically installed on the probe mounting plate (21005), the guide shafts (21004) vertically pass through bearings (21001) on the probe telescopic cylinder mounting plate (21009), and the probe mounting plate (21005) can be moved up and down along the guide shafts (21004) under the action of the probe telescopic cylinder (21002); A slider (21000) is installed on the probe telescopic cylinder mounting plate (21009), and the slider (21000) and the slide rail (2102) are engaged with each other, thereby allowing the probe set (2100) to move back and forth along the slide rail (2102).

2. A water-cooled constant pressure device for use with batteries of different thicknesses as claimed in claim 1.

8. The water-cooled constant pressure equipment for batteries of different thicknesses as described in claim 2, characterized in that a number of tray guide blocks (4000) are installed at intervals along the left-right direction on the front and rear sides of the middle and upper frame member (40), and the tray guide blocks (4000) are vertically attached to the middle and upper frame member (40) to position the constant pressure tray assembly (3) from three directions, namely the front, rear, left and right.

9. 2. The water-cooled constant pressure equipment for batteries with different thicknesses according to claim 1, characterized in that the tray liner plate (302) has engagement grooves (310) at both ends thereof which engage with the liner guide shaft (308) and can move back and forth along the liner guide shaft (308), and the tray bottom frame (303) is fixed on the liner guide shaft (308) at the lowest end.

10. The water-cooled constant pressure equipment for use with batteries of different thicknesses as described in claim 1, characterized in that the piston rod end of the reset cylinder (2107) is connected to the reset cylinder fixing plate (2108) via a connecting corner member (2106), and the reset cylinder fixing plate (2108) is slidably installed on the slide rail (2102).

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