Automatic expansion and contraction adjustment device for batteries with different thicknesses

Abstract

To provide an automatic expansion and contraction adjustment device for stably and reliably charging and discharging lithium batteries with different thicknesses.SOLUTION: An automatic expansion and contraction adjustment device includes a rack assembly 1, a needle plate assembly 2, a constant pressure tray assembly 3, and a movement mechanism assembly 4. A tray is transported to a charge / discharge position by external feeding equipment. 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. This equipment can perform self-adaptive alignment with an error of 0-10 mm according to a material battery, implements that the probe follows the expansion of the battery when the battery expands in a restrained state, eliminates an influence on charging and discharging caused by the misalignment of the battery pole and the probe caused by the expansion during a battery charging and discharging process, and ensures safety during the charging and discharging process.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to the technical field of battery manufacturing, and more specifically, to an automatic expansion and contraction adjustment device for batteries with different thicknesses.

Background Art

[0002] Charging and discharging are important processes in lithium battery processing. In the charging and discharging process, a crimping mechanism is generally used. The crimping mechanism includes an inner frame and an upper frame that can open and close facing each other. Both the inner frame and the upper frame are installed horizontally, and the inner frame is located below the upper frame. A restraint tray frame is installed on the inner frame, and separators are installed in rows on the restraint tray frame. The space between adjacent separators forms the accommodation space for the lithium battery. During charging and discharging, the lithium battery is installed in the accommodation space between the separators to form a row. The probes are arranged in rows on the upper frame, and the probe row is located above the lithium battery row. When the upper frame and the inner frame close facing each other, the probes contact the pole posts of the lithium battery to charge and discharge the lithium battery.

[0003] In order to stably and reliably charge and discharge the lithium battery, attention must be paid to the stability of the crimping between the pole post of the battery and the probe, that is, the projection positions of the probe and the pole post of the lithium battery in the vertical direction must overlap. If the positions of the probe and the pole post of the lithium battery are misaligned, the probe cannot effectively contact the pole post of the lithium battery, which will affect the charging and discharging of the lithium battery.

[0004] Theoretically, when the probe row and the lithium battery row are directly opposite, the lithium battery is directly opposite 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 separators, 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 level that affects the effective progress of the charging and discharging of the lithium battery.

[0005] Although the outer dimensions of the thickness vary depending on 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 accommodate batteries of other thicknesses.

Summary of the Invention

[0006] In order to solve the above technical problems, the present invention presents an automatic expansion and contraction adjustment device for batteries with different thicknesses. By grouping probes and fitting them to the batteries, both are driven to be positioned, and by removing the cumulative dimensional errors caused by the expansion and the dimensional errors of the lithium battery thickness dimension, the charging and discharging stability of the lithium battery is improved, and the quality and consistency of the lithium battery are improved.

[0007] In the present invention, in order to solve the technical problems, the following technical methods are adopted. The automatic expansion and contraction adjustment device for batteries with 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 extending direction of the long side of the upper frame is defined as the left-right direction, and the extending direction of the short side of the upper frame is defined as the front-rear direction. Its characteristics are as follows. A lifting cylinder mounting plate (102) is fixedly installed below the upper frame (10). The lower part of the lifting cylinder mounting plate (102) is engaged with the motion mechanism assembly. 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 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 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), rear mounting plate (206), left mounting plate (205), and right mounting plate (201) are formed to jointly surround a storage space for housing the circuit board (202). Some circuit boards (202) are arranged in the storage space at intervals along the front-rear direction. 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 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 so as to surround. Slide rails (2102) are respectively installed 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 attached to the bottom of the probe telescopic cylinder mounting plate (21009). 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 and act on 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. At both ends of the bottom of the probe telescopic cylinder mounting plate (21009), engaging blocks (21007) are vertically installed respectively. The adjacent probe telescopic cylinder mounting plates (21009) are connected by a connecting spring (21008). A reset cylinder (2107) is installed along the front-rear direction on the side of the probe rear fixing plate (2109-2) facing the inside of the housing structure. It 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). Front fixing plates (300) and rear fixing plates (307) are installed in front of and behind 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 fixing plate (300) and the rear fixing plate (307). The tray liner plate (302) can move back and forth along the liner guide shafts (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-back 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 pressing plate (304), and the other end penetrates the trapezoidal nut (305) and exposes 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 shafts (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 installed respectively. When the battery (301) expands, the fitting block (21007) is driven by 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).

[0008] 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 loading and unloading the materials of the constant-pressure tray assembly (3).

[0009] Furthermore, a plurality of sets of feed rollers (410) are installed at intervals along the front-rear direction on the lower-middle frame member (41). The front end of the lower-middle frame member (41) is the equipment supply side, and a tray support column (413) is vertically installed at the rear end of the lower-middle frame member (41). The upper-middle frame member (40) has a symmetrical structure and has two working positions on the left and right. It can place two constant-pressure tray assemblies (3) at the same time. Tray guiding 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-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).

[0010] Furthermore, 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 installed 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).

[0011] 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. On the central axis of the probe telescopic cylinder mounting plate (21009), a probe telescopic cylinder (21002) is installed. 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 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).

[0012] Furthermore, a slider (21000) is installed on the probe telescopic cylinder mounting plate (21009). The slider (21000) engages with the slide rail (2102), and the probe set (2100) can be moved back and forth along the slide rail (2102).

[0013] Furthermore, 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). On the right mounting plate (201), constriction holes for facilitating air circulation are arranged at intervals along the front-rear direction.

[0014] Furthermore, on the front and rear sides of the middle upper frame member (40), several 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.

[0015] Furthermore, engaging grooves (310) that engage with the liner guide shafts (308) are respectively formed at both ends of the trailer liner plate (302), and the trailer liner plate (302) can move back and forth along the liner guide shafts (308). The trailer bottom frame (303) is fixedly installed on the lowermost liner guide shaft (308).

[0016] Furthermore, the end of the piston rod 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). The beneficial effects of the present invention are as follows.

[0017] 1. The tray is transported 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 the fitting block of the needle plate assembly and the tray fitting head automatically and correctly align, so that the probe and the battery terminal can be quickly and correctly aligned.

[0018] 2. The present invention corresponds to a material battery and can perform self - adaptive alignment with an error of 0 - 10 mm. In a constrained state, when the battery expands, the probe is made to follow the expansion of the battery.

[0019] 3. In the present invention, damage to the surface of the battery terminal during the passive process of the battery is prevented, and the requirement for the indentation on the appearance is satisfied. Since the alignment between the battery terminal and the needle plate is calibrated in real time, the probe and the battery terminal can be brought into good contact with batteries of different material thicknesses. Also, 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 is eliminated, ensuring the safety during the charge and discharge process of the battery.

Brief Description of the Drawings

[0020]

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[0021] Explanation of reference signs 1 Rack assembly 10 Upper frame 11 Bottom frame 12 Movement axis 13 Support column 14 Cooler 100 Smoke exhaust fan 101 Support base 102 Lifting cylinder mounting plate 103 Needle plate mounting pulley 104 Needle Plate Mounting Front Fixed Plate 105 Needle Plate Mounting Rear Fixed 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 Fixed Slide Rail 2100 Probe Set 2101 Cylinder Bus 2102 Slide Rail 2103 Blocking Block 2104 Guide Block 2105 Ambient Thermometer 2106 Connection Corner Member 2107 Reset Cylinder 2108 Reset Cylinder Fixed Plate 2109-1 Probe Front Fixed Plate 2109-2 Probe Rear Fixed Plate 2110-1 Probe Left Fixed Plate 2110-2 Probe Right Fixed Plate 2111 Slide Rail Fixed 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 fixing plate 301 Battery 302 Trailer liner plate 303 Tray bottom frame 304 Pushing plate 305 Trapezoidal nut 306 Screw 307 Rear fixing 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 heat dissipation fan 4002 Feeding cylinder fixing 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 cord reader 4010 Tray positioning pin 4011 Feeding cylinder 4012 Lifting cylinder 4013 Disappearing cylinder 4014 Cable drag chain 4015 Lifting cylinder fixing plate 410 Feed roller 411 Tray horizontal position sensor 412 Support column fixing member 413 Tray support column 414 First linear bearing 415 First cylinder mounting joint 416 Tray support nylon block

Modes for Carrying Out the Invention

[0022] The following will describe in detail the specific embodiments in the embodiments of the present invention in conjunction with the drawings. It should be understood that the specific embodiments described herein are only for explaining and interpreting the embodiments of the present invention, and not for limiting the embodiments of the present invention.

[0023] It should be noted that, under non-contradictory circumstances, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0024] What must be understood in the description of the present invention is 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 facilitating the description of 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 is configured and operated by a specific orientation, and should not be understood as a limitation to the present invention.

[0025] Also, the terms "first" and "second" are only used for describing purposes, and should not be understood as indicating relative importance, implying, or implicitly indicating the number of technical features. 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 otherwise clearly and specifically limited.

[0026] In the present invention, unless otherwise clearly defined and limited, terms such as "mounting", "connecting", "attaching", "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 via an intermediate medium, or the communication inside two elements or the interaction relationship between two elements, except when there are otherwise clearly defined limitations. A person skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation.

[0027] 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. Also, when the first feature is "above", "upward", or "upper surface" of the second feature, the first feature may be directly above or obliquely above the second feature, or it 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", "downward", or "lower surface" of the second feature, the first feature may be directly below or obliquely below the second feature, or it may only indicate that the horizontal height of the first feature is lower than that of the second feature.

[0028] In the description of this specification, descriptions such as referring to "one embodiment", "several embodiments", "illustration", "specific illustration", or "several illustrations" of terms mean that they are combined with the specific features, structures, materials, or characteristics described in the embodiment or illustration and are 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. Also, the specific features, structures, materials, or characteristics described can be combined in a suitable form in one or more embodiments or illustrations. Also, in situations where there is no contradiction, a person skilled in the art can combine or combine the different embodiments or illustrations described in this specification and the features of different embodiments or illustrations.

[0029] Hereinafter, with reference to the drawings, the present invention will be described in detail in connection with exemplary embodiments. As shown in FIGS. 1 to 19, the automatic expansion and contraction adjustment device for batteries with different thicknesses according to the present invention includes a rack assembly 1 including a horizontally installed upper frame 10 and a bottom frame 11, the bottom frame 11 being located below the upper frame 10 and fixedly connected by a plurality of support columns 13. The extending direction of the long side of the upper frame is defined as the left - right direction, and the extending direction of the short side of the upper frame is defined 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 movement mechanism assembly. A plurality of movement shafts 12 are arranged between the upper frame 10 and the bottom frame 11, including the rack assembly 1.

[0030] A needle plate assembly 2 is installed below the upper frame 10. Above each working position, there is a corresponding set of needle plate assemblies 2, including 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 plurality of circuit boards 202 are arranged at intervals along the front - rear direction within the storage space. Needle plate fixing slide rails 207 are installed above the left mounting plate 205 and the right mounting plate 201 respectively.

[0031] The needle plate member 21 of different types 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 so as to surround. Slide rails 2102 are respectively installed 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 that engage with and act on 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, fitting blocks 21007 are respectively installed vertically. Between adjacent probe telescopic cylinder mounting plates 21009, they are connected by a connecting spring 21008. On the side facing the inside of the housing structure on the probe rear fixing plate 2109-2, a reset cylinder 2107 is installed along the front-rear direction. It 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.

[0032] The constant-pressure tray assembly 3 includes a tray bottom frame 303 horizontally installed below the needle plate assembly 2. Front and rear fixing plates 300 and 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 shafts 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 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 shafts 308. The screw 306 horizontally pushes the push plate 304 to apply a horizontally forward force. Engagement heads 311 for docking with the engagement block 21007 are respectively installed on the surfaces of both ends of the tray liner plate 302 facing the engagement block 21007. 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 to ensure the accuracy of the alignment between the current probe 21003 and the battery's pole post.

[0033] 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.

[0034] In one embodiment, the movement 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 each slidably mounted on the movement 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.

[0035] In one embodiment, a plurality of sets of feed rollers 410 are installed at intervals along the front-rear direction on the lower middle frame member 41. The front end of the lower middle frame member 41 is the equipment supply side. A tray support column 413 is vertically installed at the rear end of the lower middle frame member 41. The upper 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 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, on which 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 telescoping cylinder 21002 is installed on the central axis of the probe telescoping cylinder mounting plate 21009. The piston rod end of the probe telescoping 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 through the bearings 21001 on the probe telescoping cylinder mounting plate 21009, and under the action of the probe telescoping cylinder 21002, the probe mounting plate 21005 can be moved up and down along the guide shafts 21004.

[0038] In one embodiment, a slider 21000 is installed on the probe telescoping cylinder mounting plate 21009. The slider 21000 engages with the slide rail 2102, and 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 on 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. On the right mounting plate 201, constriction holes for facilitating air circulation are arranged at intervals along the front-rear direction.

[0040] In one embodiment, several 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 trailer liner plate 302, and the liner guide shafts 308 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 end of the piston rod of the reset cylinder 2107 is connected to the reset cylinder fixing plate 2108 via the 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 the support bases 101 respectively.

[0044] In one embodiment, coolers 14 are respectively 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 where there are no 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. On the middle upper frame member 40, a second linear bearing 4006 is vertically placed and used to slidably mount the middle upper frame member 40 on the movement axis 12. A feeding cylinder 4011 is installed on the central axis line of the middle upper frame member 40. The feeding cylinder 4011 is fixedly installed on the middle upper frame member 40 via 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 the 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. On the middle upper frame member 40, a movement mechanism stopper 4008 is vertically installed 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 via 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 axis 12 on the middle lower frame member 41 and is used to slidably mount the middle lower frame member 41 on the movement axis 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 probe front fixing plate 2109-1 and is used to merge the air pipes of the cylinders in the needle plate assembly 2 to make the wiring look nice. The slide rail 2102 is attached below the probe left fixing plate 2110-1 and the probe right fixing plate 2110-2 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 into 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 needle plate front mounting fixing plate 104 and the needle plate rear mounting fixing plate 105.

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

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

[0052] The present invention can be compatible with batteries having a maximum thickness of 44 mm and a minimum thickness of 36 mm. From FIG. 16a, 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, it can be known that the mating blocks 21007 of the first 4 sets of probe sets 2100 contact the constant-pressure tray mating head 311 first. From FIG. 19, it can be seen that the first set of mating heads 311 of the constant-pressure tray assembly 3 is always aligned with the center 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 known that the error becomes larger for the rear mating heads 311 and mating blocks 21007. Since the misalignment error between the first 4 sets of mating heads 311 and mating blocks 21007 can be automatically aligned by itself during the process of the lifting cylinder 4012 rising, if the completion of the alignment of the first 4 sets of probe sets 2100 is prioritized, the last 5 sets of probe sets 2100 will be pressed by the first 4 sets and move backward. The guide block 2104 is installed at the rearmost of all the probe sets 2100. At this time, the guide block 2104 contacts the mating head 311 of the last set of trailer liner plates. The lifting cylinder 4012 continues to move the constant-pressure tray assembly 3 upward. At this time, the guide block 2104 moves backward. Connection springs 21008 are attached to both sides of the probe telescopic cylinder mounting plate 21009 to connect all the probe sets 2100 and the guide block 2104. When the guide block 2104 moves backward, the last 5 probe sets 2100 are moved backward to make the intervals between the probe sets 2100 substantially consistent, so as to be used to align all the mating heads 311 and mating blocks 21007. Current probes 21003 and temperature probes 21006 are vertically installed on the needle plate mounting plate to monitor the charging and discharging of the battery and the battery temperature, and are used 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. The rack assembly (1) includes an upper frame (10) and a bottom frame (11) that are horizontally installed, the bottom frame (11) being located below the upper frame (10) and fixedly connected to the bottom frame (11) by a plurality of support pillars (13), and 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-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 under the upper frame (10), and each work position corresponds to a set of needle plate assemblies (2), which includes a power module member (20) and a different type needle plate member (21), and the different type needle plate member (21) is located under 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) form a storage space for storing circuit boards (202) together, and a number of circuit boards (202) are arranged in the storage space at intervals along the front-rear direction. A needle plate fixing slide rail (207) is installed above the left mounting plate (205) and the right mounting plate (201). 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 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) together form a housing structure surrounding the probe left fixing plate (2110-1) and the probe right fixing plate (2110-2). A slide rail (2102) is installed below each of the probe sets (2100) and the housing structure is provided with a number of probe sets (2100) arranged at intervals along the front-rear direction. Each probe set (2100) includes a probe telescopic cylinder mounting plate (21009) that corresponds to the probe telescopic cylinder (21002) one-to-one. The probe assembly is mounted on the bottom of the probe telescopic cylinder mounting plate (21009). 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). A number of probe telescopic cylinder mounting plates (21009) are slidably installed on the slide rails (2102) and aligned in the front-rear direction. At both ends of the bottom of the probe telescopic cylinder mounting plate (21009), A mating block (21007) is installed vertically, and adjacent probe telescopic cylinder mounting plates (21009) are connected by connecting springs (21008). A reset cylinder (2107) is installed along the front-to-rear direction on the side of the probe rear fixing plate (2109-2) facing the inside of the housing structure, and is installed slidably on the slide rail (2102). The reset cylinder (2107) pushes the reset cylinder fixing plate (2108) horizontally 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). 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 push 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). The initial gap between the tray liner plates (302) can be adjusted by rotating the screw (306). 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), 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 place the constant pressure tray assembly (3) and is characterized in that it can move up and down along a motion axis (12). Automatic adjustment device for expansion and contraction of 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); The automatic expansion / contraction adjusting device for batteries having different thicknesses according to claim 1.

3. 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 and has two working positions, one on the left and one on the right, on which two constant pressure tray assemblies (3) can be placed simultaneously. Each working position is provided with a tray guide block (4000) that assists in positioning the constant pressure tray assemblies (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. The automatic expansion / contraction adjusting device for batteries having different thicknesses according to claim 2.

4. The automatic expansion / contraction adjustment device for batteries of different thicknesses as described in claim 3, characterized in that a rising cylinder (4012) is installed below the rising cylinder mounting plate (102), the piston rod end of the rising cylinder (4012) is fixed on the rising cylinder fixing plate (4015), a disappearing cylinder (4013) is attached on the rising cylinder fixing plate (4015), and the piston rod end of the disappearing cylinder (4013) is fixed on the second cylinder mounting joint (4007).

5. The automatic expansion and contraction adjustment device for batteries of different thicknesses as described in claim 1, characterized in that 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 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), 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).

6. The automatic expansion / contraction adjustment device for batteries of different thicknesses as described in claim 1, characterized in that a slider (21000) is installed on the probe telescopic cylinder mounting plate (21009), and the slider (21000) engages with a slide rail (2102) to allow the probe set (2100) to move back and forth along the slide rail (2102).

7. The automatic expansion / contraction adjustment device for batteries of different thicknesses as described in claim 1, characterized in that hooks (203) for fixing the needle plate assembly (2) on the upper frame (10) are installed on the front mounting plate (200) and the rear mounting plate (206), a module heat dissipation fan (204) for dissipating heat from the circuit board (202) is installed on the left mounting plate (205), and narrow holes for facilitating air circulation are arranged at intervals along the front-to-rear direction on the right mounting plate (201).

8. The automatic expansion / contraction adjustment device for batteries of different thicknesses as described in claim 1, 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, the front, rear, left and right.

9. 2. The automatic expansion / contraction adjustment device for batteries of different thicknesses as claimed in 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 automatic expansion / contraction adjustment device for batteries of different thicknesses as described in claim 1, characterized in that the piston rod end of the reset cylinder (2107) is connected onto 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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