CN216698483U

CN216698483U - Electrode mechanism for power battery needle bed

Info

Publication number: CN216698483U
Application number: CN202123067718.7U
Authority: CN
Inventors: 孙祖健; 曹成军; 张进锋; 黄志豪
Original assignee: Guangzhou Kinte Industrial Co Ltd
Current assignee: Guangzhou Kinte Industrial Co Ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-06-07
Anticipated expiration: 2031-12-08

Abstract

The utility model discloses an electrode mechanism for a power battery needle bed, which comprises an anode mechanism and a cathode mechanism, wherein the anode mechanism and the cathode mechanism comprise a first mounting seat, a supporting frame and a supporting device; the support frame is connected with two ends of the first mounting seat and used for supporting the first mounting seat; the supporting device is provided with a supporting rod, one end of the supporting rod is connected with the first mounting seat, and the other end of the supporting rod is connected with the supporting frame and used for supporting the first mounting seat to reduce stress deformation of the first mounting seat. The problem of because first mount pad warp and arouse contact pressure inconsistent is solved, avoided power battery to appear educing lithium and influence power battery's performance and life in the formation process.

Description

Electrode mechanism for power battery needle bed

Technical Field

The utility model belongs to the technical field of lithium batteries, and particularly relates to an electrode mechanism for a power battery needle bed.

Background

In the production process of the lithium battery, the assembled lithium battery is further activated through the procedures of formation, OVC measurement and capacity grading, wherein the formation refers to an electrochemical process of giving a certain current to the lithium battery to excite positive and negative electrode active substances of the battery and finally enable the battery to have discharge capacity, and when the lithium battery is formed, because the potential of the negative electrode side of the lithium battery is zero, a solvent used in an electrolyte can be reduced and decomposed on the surface of the negative electrode to generate gas; "OVC measurement" refers to measuring the open circuit voltage of a lithium battery, i.e., the voltage across the lithium battery when the lithium battery is not discharged and open circuit; "Capacity grading" refers to the process of classifying batteries by capacity through certain charge and discharge detection.

In the prior art, power batteries are usually sheet-shaped lithium batteries, and in a formation process, the sheet-shaped power batteries are placed in a tray one by one, two ends of the tray are respectively provided with a plurality of groups of positive probes and negative probes, and each power battery is charged by one group of positive probes and negative probes. In order to ensure that a plurality of power batteries in the tray are charged simultaneously, the two ends of the tray are provided with first strip-shaped mounting seats for storing a plurality of positive probes or negative probes. Because the width of the power battery is small, the positive probes and the negative probes on the first mounting seat are arranged tightly and can only be fixed at two ends of the first mounting seat. However, in practice, it is found that since the first mounting seat is long and only two ends of the first mounting seat are fixed, the first mounting seat is easy to recess or protrude from the center to two ends, so that the contact pressure between the positive electrode probe and the negative electrode probe on the first mounting seat and the pole of the power battery is inconsistent, and the power battery is easy to be caused to precipitate lithium when the contact pressure is inconsistent in the formation process, which has a great influence on the performance and the service life of the power battery.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems and provides an electrode mechanism for a power battery needle bed.

In order to solve the problems, the utility model is realized according to the following technical scheme:

the utility model provides an electrode mechanism for a power battery needle bed, which comprises a positive electrode mechanism and a negative electrode mechanism, wherein the positive electrode mechanism and the negative electrode mechanism comprise:

the first mounting seat is provided with one of a positive probe or a negative probe;

the support frame is connected with two ends of the first mounting seat and used for supporting the first mounting seat;

the supporting device is provided with a supporting rod, one end of the supporting rod is connected with the first mounting seat, and the other end of the supporting rod is connected with the supporting frame and used for supporting the first mounting seat to reduce stress deformation of the first mounting seat.

Preferably, the supporting device further comprises:

the adjusting holes are arranged on the supporting frame and are waist-shaped long holes in the vertical direction;

the adjusting bolt penetrates through the adjusting hole and is fixedly connected with the other end of the supporting rod, and the head of the adjusting bolt is larger than the diameter of the adjusting hole and is used for fixing the supporting rod.

Preferably, the positive probe and the negative probe are double-spring telescopic quick-change probes, and the double-spring telescopic quick-change probes are used for switching the connection states of the positive probe and the negative probe with the power battery.

Preferably, the two ends of the support frame are provided with right-angle graduated scales for measuring the height of the first mounting seat, the right-angle edges of the right-angle graduated scales opposite to the first mounting seat are provided with linear sliding grooves, and the linear sliding grooves are used for being matched with the first mounting seat in a sliding mode. Preferably, the positive pole mechanism is equipped with negative pressure suction nozzle, be equipped with the second mount pad on the support frame, negative pressure suction nozzle installs on the second mount pad, negative pressure suction nozzle's quantity with positive probe or negative pole probe's quantity equals, negative pressure suction nozzle is the flexible quick change type negative pressure suction nozzle of double spring, the flexible quick change type negative pressure suction nozzle of double spring is used for switching negative pressure suction nozzle and power battery's connected state.

Preferably, a solution disk is arranged below the negative pressure suction nozzle and used for receiving electrolyte leaked from the negative pressure suction nozzle, and the solution disk is fixedly connected with the first mounting seat.

Preferably, the negative pressure suction nozzle is connected with a liquid receiving module, and the liquid receiving module is used for storing electrolyte generated in the formation process. Preferably, an axial fan is arranged on the support frame and is arranged right above the positive probe and the negative probe.

Preferably, the negative pole mechanism is equipped with temperature probe, temperature probe installs on first mount pad, temperature probe's quantity with positive pole probe or negative pole probe's quantity equals, temperature probe is the flexible quick change type temperature probe of double spring, the flexible quick change type temperature probe of double spring is used for switching temperature probe and power battery's connected state.

Preferably, a probe storage rack is arranged on the support frame, and a plurality of storage grooves are formed in the probe storage rack and used for storing the positive probes and the negative probes.

Compared with the prior art, the utility model has the beneficial effects that:

in the embodiment of the utility model, the supporting device is arranged behind the first mounting seat and used for supporting the first mounting seat, the supporting device is provided with the supporting rod, one end of the supporting rod is connected with the first mounting seat, and the other end of the supporting rod is connected with the supporting frame and used for supporting the first mounting seat to reduce the stress deformation of the first mounting seat. The problem of because first mount pad warp and arouse contact pressure inconsistent is solved, avoided power battery to appear analysing lithium and influencing power battery's performance and life in the formation process.

Drawings

Embodiments of the utility model are described in further detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic structural diagram of a power battery rapid changing needle bed;

FIG. 2 is a front view of a power battery quick-change needle bed;

FIG. 3 is an enlarged view of view A of FIG. 2;

FIG. 4 is a schematic view of the structure of the power mechanism of the needle bed;

FIG. 5 is an enlarged view of view B of FIG. 4;

FIG. 6 is a top view of the power mechanism of the needle bed;

FIG. 7 is an enlarged view of view C of FIG. 6;

FIG. 8 is a schematic view of a first linear motion assembly of the power mechanism;

fig. 9 is a schematic view of a second linear motion assembly of the power mechanism;

FIG. 10 is a schematic view of the structure of the positioning mechanism of the needle bed;

fig. 11 is a schematic front structural view of the positive electrode mechanism of the present invention;

FIG. 12 is an enlarged view of view D of FIG. 11;

fig. 13 is a back side structural schematic view of the positive electrode mechanism of the present invention;

FIG. 14 is an enlarged view of view E of FIG. 13;

fig. 15 is a schematic front view of the negative electrode mechanism of the present invention;

fig. 16 is a back side structural view of the negative electrode mechanism of the present invention;

FIG. 17 is an enlarged view of view F of FIG. 15;

FIG. 18 is a schematic structural view of a body carrier mechanism of the needle bed.

In the figure:

1. a body support mechanism;

101. a pillar; 1011. a third chute;

102. a top frame; 103. a support bar; 104. a cross beam;

2. a positive electrode mechanism;

201. a support frame;

202. a first scale; 2021. a first chute;

203. an axial flow fan; 204. a liquid receiving module; 205. a first mounting seat; 206. a probe storage rack; 207. a positive electrode probe; 208. a negative pressure suction nozzle;

209. a support device; 2091. fixing the rod; 2092. a support bar; 2093. adjusting the bolt; 2094. an adjustment hole;

210. a second mounting seat; 211. a liquid receiving disc;

3. a positioning mechanism;

301. a first connecting seat; 3011. a base; 3012. a first cushion block; 3013. positioning pins; 3014. positioning blocks; 3015. a second cushion block; 3016. a connecting plate; 3017. a travel switch; 3018. a limit screw;

302. a second connecting seat;

4. a power mechanism;

401. a bottom frame; 402. a first linear guide rail; 403. a guide rail slider;

404. a first linear motion assembly; 4041. a first support base; 4042. an oil receiving pan; 4043. a first lead screw; 4044. a first movable base; 4045. a second support seat; 4046. a protective cover;

405. a second linear guide;

406. a second linear motion assembly; 4063. a second lead screw; 4064. a second movable base;

407. a coupling; 408. a driven wheel; 409. a synchronous belt; 4010. a driving wheel; 4011. a speed reducer; 4012. a motor; 4013. a connecting assembly; 4014. a second scale; 4015. a second chute;

5. a negative electrode mechanism;

507. a negative probe; 508. a temperature probe;

6. an infrared detection device;

601. infrared rays; 602. a first fixed seat; 603. a second fixed seat.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

In the prior art, a certain current is applied to a power battery in a formation process to excite positive and negative electrode active materials of the battery, and finally the battery has an electrochemical process with a discharge capacity, when the power battery is formed, because the potential on the negative electrode side of the power battery is zero, a solvent used in an electrolyte can be reduced and decomposed on the surface of the negative electrode to generate gas, a positive electrode probe 207 and a negative electrode probe 507 of a needle bed used for formation in the formation process are usually in separate contact with the power battery, usually the power battery contacts the negative electrode probe 507 first, then the power battery is charged by moving the positive electrode probe 207, but because the positive electrode probe 207 and the negative electrode probe 507 are in asynchronous contact with the power battery, the contact pressure between the positive electrode and the negative electrode of the power battery is inconsistent, and because formation charging is usually accompanied by a large current and high charging SOC, the gas generation speed during formation is faster, when the contact pressure of the anode and the cathode of the power battery is inconsistent, the generated gas cannot be completely discharged and the interface contact of the anode and the cathode is influenced, so that the phenomenon of lithium precipitation of the power battery is easily caused, the performance of the power battery is easily reduced due to the lithium precipitation, the cycle life is greatly shortened, the quick charge capacity of the power battery is limited, and even the phenomena of combustion, explosion and the like of the power battery can be caused.

When the power battery is subjected to a formation process, a piece of power battery is placed in the tray, and the tray is positioned, so that the power battery is positioned, however, in the prior art, the anode pole and the cathode pole of the power battery are not in equal contact pressure due to the fact that the cathode probe and the anode probe are sequentially contacted in the formation process, and when the number of the power batteries in the tray changes, the needle bed is difficult to be compatible with the power battery pack with the changed number, redundant anode probes, cathode probes, negative pressure suction nozzles 208 and temperature probes 508 need to be disassembled one by one, so that the number of the probes is matched with the number of the power batteries, and the positions of the probes need to be adjusted to correspond to the central position of the power battery, so that the operation steps are complicated.

As shown in fig. 1 to 18, a power battery rapid prototyping needle bed comprises a power mechanism 4, a positive mechanism 2, a negative mechanism 5, a positioning mechanism 3 and a body support mechanism 1, wherein the electrode mechanism comprises the positive mechanism 2 and the negative mechanism 5.

Specifically, the positioning mechanism 3 is used for positioning and fixing the power battery waiting for the formation treatment, and the anode and the cathode of the power battery are respectively positioned on the left side and the right side; the power mechanism 4 includes a first linear motion component 404 and a second linear motion component 406, both the first linear motion component 404 and the first linear motion component 404 are screw rod components, a first screw rod 4043 and a first moving seat 4044 are disposed in the first linear motion component 404, a second screw rod 4063 and a second moving seat 4064 are disposed in the second linear motion component 406, the first screw rod 4043 and the second screw rod 4063 have the same precision and opposite rotation directions, wherein the first screw rod 4043 rotates rightwards, the second screw rod 4063 rotates leftwards, and when the first screw rod 4043 and the second screw rod 4063 rotate in the same direction, the first moving seat 4044 and the second moving seat 4064 can be driven to move towards each other or move away from each other at the same speed. The positive mechanism 2 is fixedly connected to the first movable seat 4044 through a bolt, the positive probe 207 is arranged on the positive mechanism 2, the negative mechanism 5 is fixedly connected to the second movable seat 4064 through a bolt, the negative probe 507 is arranged on the negative mechanism 5, the distance between the positive probe 207 and the positive electrode of the power battery is equal to the distance between the negative probe 507 and the negative electrode of the power battery, when the first movable seat 4044 and the second movable seat 4064 drive the positive mechanism 2 and the negative mechanism 5 to move in opposite directions, the positive probe 207 and the negative probe 507 can be ensured to simultaneously contact the positive electrode and the negative electrode of the power battery, the contact pressure between the positive electrode and the negative electrode of the power battery is consistent, the phenomena that gas generated in the formation process cannot be completely discharged, the positive and negative electrode interface contact is affected, lithium precipitation of the power battery is caused are avoided, the performance, the cycle life and the stability of the fast charging power battery are ensured, and the combustion of the power battery is avoided, Explosion, etc., causes major dangerous accidents.

In a preferred embodiment, the first linear motion assembly 404 and the second linear motion assembly 406 are both cylinder assemblies, and the first linear motion assembly 404 and the second linear motion assembly 406 are cylinders with the same type, so that the first moving seat 4044 and the second moving seat 4064 are ensured to simultaneously move in opposite directions with equal speed by the movement of the piston by controlling the ventilation time and the ventilation amount of the cylinder assemblies.

Specifically, the first linear motion assembly 404 and the second linear motion assembly 406 further include: first supporting seat 4041, second supporting seat 4045, protection cover 4046, connect food tray 402, first supporting seat 4041 and second supporting seat 4045 are located the both ends of first lead screw 4043 and second lead screw 4063 and are used for supporting first lead screw 4043 and second lead screw 4063, be equipped with the bearing in first supporting seat 4041 and the second supporting seat 4045 and be convenient for first lead screw 4043 and second lead screw 4063 to rotate, protection cover 4046 is used for protecting first lead screw 4043 and second lead screw 4063 and prevents that dust and foreign matter from hindering first removal seat 4044 and removing on first lead screw 4043 with first removal seat 4044, connect food tray 402 to be used for catching the lubricating oil that is used for lubricating first lead screw 4043 and second lead screw 4063. One end of the first lead screw 4043 extending out of the first supporting seat 4041 is connected with a driven wheel 408 in a synchronous belt 409 mechanism, the driven wheel 408 is fixedly connected with the first lead screw 4043 in a key mode, and a coupler 407 is arranged between the first lead screw 4043 and the second lead screw 4063 and used for ensuring synchronous rotation of the first lead screw 4043 and the second lead screw 4063.

Specifically, first lead screw 4043 and second lead screw 4063 all adopt auto-lock trapezoidal lead screw, when first lead screw 4043 and second lead screw 4063 reach the assigned position, can make motor 4012 stop motion, and first lead screw 4043 and second lead screw 4063 can not appear the phenomenon of reversal when not exerting power owing to the self-locking, it is just further ensured that power battery, the stability of negative pole contact pressure is changing into the in-process, do not need motor 4012 to be in load work for a long time simultaneously, motor 4012's life has been improved.

Specifically, the end portions of the first linear motion assembly 404 and the second linear motion assembly 406 are provided with manual rotation wrench positions, so that the situation that the power battery, the first linear motion assembly 404 and the second linear motion assembly 406 are damaged due to the fact that the first lead screw 4043 and the second lead screw 4063 are in a pressing state for a long time due to sudden power failure or gas failure in the formation process is avoided.

Specifically, first lead screw 4043 has connected gradually from driving wheel 408, hold-in range 409, action wheel 4010, reduction gear 4011 and motor 4012, adopt hold-in range 409 structural transmission to guarantee power transmission's stability, motor 4012 is used for providing the power supply and orders about first lead screw 4043 and rotates, and then drives second lead screw 4063 synchronous rotation through shaft coupling 407, reduction gear 4011 is used for controlling the output rotational speed, reduce first lead screw 4043's inertia, guarantee that first lead screw 4043 and second lead screw 4063 rotate steadily.

In a preferred embodiment, a gear is arranged at the end of the first lead screw 4043, and a speed reducer 4011 and a motor 4012 are connected through a gear structure to provide power for the first lead screw 4043.

In another preferred embodiment, the first lead screw 4043 and the second lead screw 4063 are respectively connected with a motor 4012, the two motors 4012 have the same rotation speed, and respectively drive the first lead screw 4043 and the second lead screw 4063 to rotate, so as to drive the first movable base 4044 and the second movable base 4064 to simultaneously move in opposite directions.

Specifically, the power structure further comprises: bottom frame 401, linkage assembly 4013, first linear guide 402, and second linear guide 405. Wherein bottom frame 401 is by the fixed rectangular frame that forms of alloy plate concatenation, coupling assembling 4013 locates in the middle of bottom frame 401, coupling assembling 4013 includes bottom plate and apron, the apron lid prevents on locating the bottom plate that the part gets into debris in the bottom plate, bottom plate and bottom frame 401 bolted connection, bolted connection has motor 4012 on the bottom plate, reduction gear 4011 and first linear motion subassembly 404 and the first support seat 4041 of second linear motion subassembly 406, in order to guarantee power transmission's stability between first lead screw 4043 and the second lead screw 4063. Two first linear guide rails 402 and two second linear guide rails 405 with the same specification are fixed on two long rods of the bottom frame 401, two groups of guide rail sliders 403 are arranged at corresponding positions on the first linear guide rails 402 and the second linear guide rails 405 and used for being matched with the first linear guide rails 402 and the second linear guide rails 405, one group of guide rail sliders 403 are fixedly connected with two ends of the positive pole mechanism 2 and used for assisting in supporting the positive pole mechanism 2 connected with the first connecting seat 301, and the other group of guide rail sliders 403 are fixedly connected with two ends of the negative pole mechanism 5 and used for assisting in supporting the negative pole mechanism 5 connected with the second connecting seat 302. Limiting buffer and buffer fixing parts are arranged at two ends of the first linear guide rail 402 and the second linear guide rail 405 and used for preventing the guide rail sliding block 403 from being separated from the first linear guide rail 402 and the second linear guide rail 405, and the problem of overpressure caused by control errors of the motor 4012 can be avoided.

Specifically, be equipped with second spout 4015 on bottom frame 401, second spout 4015 is the straight line spout, be equipped with in bottom frame 401 side with second spout 4015 length assorted second scale 4014, through second spout 4015 with be connected with positioning mechanism 3, positioning mechanism 3 includes first connecting seat 301 and second connecting seat 302, first connecting seat 301 and second connecting seat 302 span and be used for placing and the location of loading power battery's tray in bottom frame 401 both ends. Limiting screws 3018 are arranged on the outer sides of the first connecting seat 301 and the second connecting seat 302 to prevent the first connecting seat 301 and the second connecting seat 302 from exceeding the limit position, the first connecting seat 301 and the second connecting seat 302 comprise two bases 3011, a connecting plate 3016, two first cushion blocks 3012 and a second cushion block 3015, wherein the two bases 3011 are H-shaped equal-height seats, the upper ends of the bases are fixed with the connecting plate 3016, the lower ends of the bases are provided with T-shaped strips to be matched with a second sliding groove 4015 of the bottom frame 401, and the positions of the first connecting seat 301 and the second connecting seat 302 are adjusted and determined by combining a second graduated scale 4014, the two first cushion blocks 3012 are provided with positioning blocks 3014 and positioning pins 3013 which are in right angles and used for positioning and clamping of a tray, the first cushion blocks 3012 and the second cushion blocks 3015 are provided with isolation pads, so that conduction between the tray for containing a power battery in the test process and a power battery shell and a positioning mechanism 3 can be effectively avoided, the test accuracy is improved; a second cushion block 3015 is arranged in the middle of the connecting plate 3016 and used for assisting in supporting a tray for loading power batteries, a positioning block 3014 is arranged at one end of the second cushion block 3015 and used for being matched with the first cushion block 3012 to position and clamp, and a travel switch 3017 is arranged on one side of the base 3011 and used for detecting whether the tray is horizontal or not.

Specifically, the positive pole mechanism 2 includes a supporting frame 201, the bottom of the supporting frame 201 is connected to a first moving seat 4044, a first mounting seat 205 and a second mounting seat 210 are arranged on the supporting frame 201, a plurality of mounting stations are arranged in the first mounting seat 205 for mounting a plurality of positive pole probes 207, a plurality of negative pressure suction nozzles 208 are arranged on the second mounting seat 210, the number of the negative pressure suction nozzles 208 is the same as that of the positive pole probes, notches for measuring height are arranged on both sides of the first mounting seat 205 and the second mounting seat 210, a pair of first scales 202 are arranged on both sides of the supporting frame 201, the first scales 202 are right-angle scales, the first scales 202 are matched with the notches on the first mounting seat 205 and the second mounting seat 210 for measuring the height of the first mounting seat 205 and the second mounting seat 210, a first chute 2021 is arranged on a right-angle side of the first scales 202, the first chute 2021 is a straight chute, the first mounting seat 205 and the second mounting seat 210 are fixed in the first chute 2021 by adjusting bolts, the first mounting seat 205 and the second mounting seat 210 can move up and down along the first sliding groove 2021 by loosening the adjusting bolt, so that the height of the first mounting seat 205 can be adjusted by matching with the adjusting bolt, so that the positive probe 207 can be adjusted to be as high as a positive pole of a power battery, the negative pressure suction nozzle 208 is as high as a liquid suction port of the power battery, the negative pressure suction nozzles 208 are used for extracting electrolyte and gas overflowing in a formation process and discharging the gas after filtering, the negative pressure suction nozzle 208 is a double-spring telescopic quick-change type negative pressure suction nozzle, the liquid receiving module 204 is connected with the negative pressure suction nozzle 208 and used for receiving and storing the electrolyte, the liquid receiving module 204 is provided with a suction pipe connected with the negative pressure suction nozzle 208, the other end of the suction pipe is provided with a liquid storage bottle for storing the electrolyte, after a subsequent vacuum breaking process and a micro-positive pressure process are completed, the electrolyte flows into the power battery along the suction pipe, and a liquid receiving disc 211 is arranged below the negative pressure suction nozzle 208 and used for receiving the liquid dropped by the negative pressure suction nozzle 208 to prevent other parts on the positive mechanism 2 The negative pressure suction nozzle 208 is provided with the axial flow fan 203, the axial flow fan 203 faces the position where the positive electrode probe 207 is in contact with the positive electrode pole of the power battery, the heat of the positive electrode probe 207 and the positive electrode pole of the power battery is dissipated in the charging process of the power battery, the temperature rise phenomenon of the positive electrode probe 207 and the positive electrode pole of the power battery in the charging and discharging processes of the power battery is effectively reduced, the probe storage rack 206 is arranged behind the support frame 201, the probe storage rack 206 is provided with a plurality of storage grooves for storing the positive electrode probe 207 and the negative pressure suction nozzle 208, and the side face of the support frame 201 is provided with the point taking assembly 209 for supplying power to the positive electrode mechanism 2.

Specifically, in the positioning mechanism 3, the upper end surfaces of the first cushion block 3012 and the second cushion block 3015 and the preset scale of the first scale 202 are equal in height, the preset scale is "0 scale", and since the upper end surfaces of the first cushion block 3012 and the second cushion block 3015 are used for supporting the tray, the heights of the first mounting seat 205 and the second mounting seat 210 can be adjusted by measuring the height difference between the positive pole column, the negative pole column, the liquid suction port and the bottom surface of the tray on the power battery, so that the heights of the positive probe 207 and the positive pole column, the heights of the negative probe 507 and the negative pole column, and the heights of the negative pressure suction nozzle and the liquid suction port can be quickly and accurately made equal.

In a preferred embodiment, the preset scales are "1 scale", "10 scale", "20 scale", and the like, and after the height difference between the positive electrode post, the negative electrode post, the liquid suction port and the bottom surface of the tray on the power battery is measured, the height that needs to be adjusted by the first mounting seat 205 and the second mounting seat 210 is obtained by adding the preset scales through calculation.

Specifically, the negative electrode mechanism 5 has substantially the same structure as the positive electrode mechanism 2, except that: the negative electrode mechanism 5 only has a first mounting seat 205, the first mounting seat 205 is provided with a plurality of negative electrode probes 507 and a plurality of temperature probes 508, the number of the temperature probes 508 is equal to that of the negative electrode probes 507, the temperature probes 508 are used for detecting the temperature near the negative electrode probes 507 to avoid the phenomenon of overheating in the charging process, and in addition, the negative electrode mechanism 5 is not provided with the negative pressure suction nozzle 208 and the liquid receiving module 204 because the negative electrode end of the power battery is not provided with the liquid suction port required by the formation process.

Specifically, the positive probe 207 and the negative probe 507 are double-spring telescopic quick-change probes, and the temperature probe 508 is a double-spring telescopic quick-change temperature probe, so that the requirements on the position and the quantity of the testing mechanism of different batteries can be met, the testing mechanism can be simply retracted when not needed, and the testing mechanism can be quickly detached and placed in the probe storage rack 206. When the number of partial power batteries in the tray is reduced, if the position of the center of the power battery relative to the outer side of the tray is not changed, the extension state can be adjusted to the contraction state by adjusting the extension state of the positive probe 207, the negative probe 507, the negative pressure suction nozzle 208 and the temperature probe 508, so that the extension length of the retraction part is disconnected with the power battery, and when the number of the power batteries in the tray is reduced and the position of the center of the power battery relative to the outer side of the tray is changed, redundant positive probes 207, negative probes 507, the negative pressure suction nozzle 208 and the temperature probe 508 can be taken out and placed into the probe storage rack 206. The problem that the number of the batteries in the compatible tray is not matched with the number of the positive probes 207, the negative probes 507 and the like can be effectively solved, the rapid model change is realized, and the model change time is shortened.

Specifically, a supporting device 209 is disposed behind the first mounting seat 205 and the second mounting seat 210, and the supporting device 209 is used for reducing the deformation of the first mounting seat 205 and the second mounting seat 210 under stress. The supporting device 209 comprises a supporting rod 2092 and a fixed rod 2091, the fixed rod 2091 is fixedly connected with the supporting frame 201, an adjusting hole 2094 is arranged in the center of the fixed rod 2091, the adjusting hole 2094 is a waist-shaped long hole, a threaded screw of an adjusting bolt 2093 penetrates through the adjusting hole 2094 to be fixed with the supporting rod 2092, the other end of the supporting rod 2092 props against the middle part of the first mounting seat 205 to be used for supporting the first mounting seat 205 to prevent the first mounting seat 205 from deforming, the head part of the other end of the adjusting bolt 2093 is larger than the diameter of the adjusting hole 2094 to prevent the head part of the adjusting bolt 2093 from penetrating through the adjusting hole 2094 and not supporting the first mounting seat 205, when the positive probe 207 or the negative probe 507 is contacted and extruded with the power battery, the first mounting seat 205 can drive the positive probe 207 or the negative probe 507 to move towards the force-bearing direction, due to the supporting effect of the supporting rod 2092, the inward sinking or outward deformation of the first mounting seat 205 is reduced, and the consistency of the contact pressure between the positive probe 207 and the negative probe 507 and the power battery is improved, the phenomenon of lithium precipitation of the power battery in the formation process is prevented.

In addition, by adjusting the length of the screw of the adjusting bolt 2093 entering the supporting rod 2092, the degree of deformation of the first mounting seat 205 can be adjusted, and the contact pressure between the positive probe 207 or the negative probe 507 and the power battery can be adjusted.

In a preferred embodiment, two or more supporting devices 209 are disposed behind the first mounting seat 205 and are uniformly distributed from the center of the first mounting seat 205 to two ends, so as to further reduce the deformation of the first mounting seat 205.

In a preferred embodiment, a height-adjustable straight rod is transversely disposed at the rear side of the supporting frame 201, the two ends of the first mounting seat 205 are thin, the middle of the first mounting seat is thick, the two ends of the first mounting seat are slidably connected with the first scale 202, the middle portion of the first mounting seat extends to the rear until the first mounting seat contacts with the straight rod, and the first mounting seat 205 and the straight rod are fixed together through bolts.

Specifically, body gimbal mechanism 1 includes four spinal branch posts 101 and top frame 102, be equipped with infrared detection device 6 such as third spout 1011 matches on the pillar 101, third spout 1011 is the sharp spout, infrared detection device 6 includes first fixing base 602 and the second fixing base 603 of two relative settings, be equipped with correlation photoelectric sensor's sender and receiver on first fixing base 602 and second fixing base 603 respectively, it has not in equipment to produce the fork of infrared ray 601 detectable RGV stacker through correlation photoelectric sensor, the fork comes in and sends the tray and has a sensing signal, the fork comes in and gets the tray and also has a sensing signal. The two pillars 101 on the same side are provided with a third sliding groove 1011, and the third sliding groove 1011 is slidably connected with the first fixing seat 602 and the second fixing seat 603 through an adjusting bolt.

Top frame 102 is fixed in on four spinal branch posts 101, top frame 102 is the rectangle, be equipped with two spinal branch vaulting poles 103 in top frame 102 and be used for placing the control box, be equipped with carbon monoxide sensor and particle sensor on top frame 102 and be used for detecting whether the burning phenomenon appears, avoid the intensity of a fire to increase, be equipped with a crossbeam 104 between two spinal branch posts 101 of rear side, be equipped with the position on crossbeam 104 and detect the relative position that the sensor is used for detecting positive mechanism 2 and negative pole mechanism 5 and tray, be equipped with supplementary electric plate and IO keysets on the crossbeam and be used for fixed wire rod, it is not hard up to have avoided the interface.

The operation steps of the rapid changing needle bed of the power battery are as follows:

putting the flaky power batteries into the tray one by one, and adjusting the position of each power battery to ensure that the central position of each power battery is fixed relative to the tray;

the first connecting seat 301 and the second connecting seat 302 of the positioning mechanism 3 are adjusted to be matched with the size of the tray, the first connecting seat 301 and the second connecting seat 302 are fixed, the distance between the left positioning mechanism 3 and the power battery and the distance between the power battery and the power battery are equal to each other while the distance between the left positioning mechanism 3 and the right positioning mechanism 3 and the distance between the power battery and the power battery are equal to each other, the power battery is placed on the positioning mechanism 3 through a fork of the RGV stacking machine, and the power battery is accurately positioned and clamped through a positioning pin 3013 and a positioning block 3014;

the height of the first mounting seat 205 is adjusted by measuring the height difference between the positive pole column and the negative pole column of the power battery and the bottom of the tray, and the height of the second mounting seat 210 is adjusted by measuring the height difference between the liquid suction port of the power battery and the bottom of the tray, so that the positive pole column and the positive probe 207, the negative pole column and the negative probe 507, and the liquid suction port and the negative pressure suction nozzle 208 are equal in height.

Starting a motor 4012, rotating a first lead screw 4043, synchronously rotating a second lead screw 4063 and a first lead screw 4043 through a coupler 407, and because the rotation directions of the first lead screw 4043 and the second lead screw 4063 are opposite, an anode mechanism 2 driven by the first lead screw 4043 and a cathode mechanism 5 driven by the second lead screw 4063 move oppositely at the same speed, so that the anode probe 207 and the cathode probe 507 are ensured to synchronously contact an anode pole and a cathode pole of the power battery, and the motor 4012 is stopped, and because the first lead screw 4043 and the second lead screw 4063 are self-locking trapezoidal lead screws, the contact pressure of the anode and the cathode of the power battery is still kept;

charging the power battery through the positive probe 207 and the negative probe 507, simultaneously starting the negative pressure suction nozzle 208 and the liquid receiving module 204 of the positive mechanism 2 to extract the electrolyte and gas overflowing in the formation process, connecting the liquid receiving module 204 with the negative pressure suction nozzle 208 for receiving the electrolyte and gas, and simultaneously dissipating heat among the power battery, the positive probe 207 and the negative probe 507 through the axial fan 203;

if the number of power batteries in the tray is reduced, if the position of the center of the power battery relative to the outer side of the tray is not changed, the extension state can be adjusted to the contraction state by adjusting the extension state of the positive probe 207, the negative probe 507 negative pressure suction nozzle 208 and the temperature probe 508, so that the extension length of the retraction part is disconnected with the power battery, and when the number of the power batteries in the tray is reduced and the position of the center of the power battery relative to the outer side of the tray is changed, redundant positive probes 207, negative probe 507 negative pressure suction nozzle 208 and temperature probe 508 can be taken out and placed into the probe storage rack 206.

After the formation process is finished, the driving motor 4012 rotates reversely, and the first lead screw 4043 and the second lead screw 4063 perform a phase separation motion to drive the anode mechanisms 2 and the cathode mechanisms 3 on the left side and the right side to separate towards the two sides;

and taking out the power battery.

Other structures of the power battery quick-change needle bed in the embodiment are shown in the prior art.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. An electrode mechanism for power battery needle bed, characterized in that, the electrode mechanism includes positive pole mechanism and negative pole mechanism, positive pole mechanism and the negative pole mechanism include:

2. The electrode mechanism for a power battery needle bed as claimed in claim 1, wherein the supporting device further comprises:

3. The electrode mechanism for the power battery needle bed is characterized in that the positive electrode probe and the negative electrode probe are double-spring telescopic quick-change probes, and the double-spring telescopic quick-change probes are used for switching the connection state of the positive electrode probe and the negative electrode probe with the power battery.

4. The electrode mechanism for the power battery needle bed is characterized in that right-angle scales for measuring the height of the first mounting seat are arranged at two ends of the supporting frame, and a straight-line sliding groove is formed in a right-angle side, opposite to the first mounting seat, of each right-angle scale and is used for being matched with the first mounting seat in a sliding connection mode.

5. The electrode mechanism for the power battery needle bed as claimed in claim 1, wherein the positive electrode mechanism is provided with negative pressure suction nozzles, the support frame is provided with a second mounting seat, the negative pressure suction nozzles are mounted on the second mounting seat, the number of the negative pressure suction nozzles is equal to the number of the positive electrode probes or the negative electrode probes, the negative pressure suction nozzles are double-spring telescopic quick-change type negative pressure suction nozzles, and the double-spring telescopic quick-change type negative pressure suction nozzles are used for switching the connection state of the negative pressure suction nozzles and the power battery.

6. The electrode mechanism for the power battery needle bed as claimed in claim 5, wherein a solution disk is arranged below the negative pressure suction nozzle and used for receiving electrolyte leaked from the negative pressure suction nozzle, and the solution disk is fixedly connected with the second mounting seat.

7. The electrode mechanism for the power battery needle bed is characterized in that a liquid receiving module is connected to the negative pressure suction nozzle and used for storing electrolyte generated in a formation process.

8. The electrode mechanism for the power battery needle bed is characterized in that an axial flow fan is arranged on the supporting frame and is arranged right above the positive probe and the negative probe.

9. The electrode mechanism for the power battery needle bed is characterized in that the negative electrode mechanism is provided with temperature probes, the temperature probes are mounted on the first mounting seat, the number of the temperature probes is equal to that of the positive electrode probes or the negative electrode probes, the temperature probes are double-spring telescopic quick-change type temperature probes, and the double-spring telescopic quick-change type temperature probes are used for switching the connection state of the temperature probes and the power battery.

10. The electrode mechanism for the power battery needle bed is characterized in that a probe storage rack is arranged on the supporting frame, and a plurality of storage grooves are formed in the probe storage rack and used for storing the positive probes and the negative probes.