A chemical separation and storage device and a chemical separation and storage cabinet

Abstract

The utility model relates to the technical field of battery capacity separation, and discloses a capacity separation device and a capacity separation cabinet. The capacity separation device includes a supporting vertical plate; a tray, which is installed on the supporting vertical plate in a horizontal plane, and a plurality of temperature probes are evenly spaced on the central axis of the tray; a lower pressure plate, which is erected above the tray, and the lower pressure plate includes two crossbeams arranged parallel to each other, and the two ends of the two crossbeams are respectively connected to fixed plates, and a plurality of electric contacts are evenly spaced on the crossbeams; a driving component, including a guide rod and a driving motor, one end of the guide rod passes through the two ends of the tray and is connected to the fixed plate, and the other end of the guide rod is connected to the output shaft of the driving motor; the driving motor is used to drive the guide rod to drive the lower pressure plate to move up and down; the capacity separation device can perform real-time temperature detection on the battery during capacity separation, reducing labor costs and improving the screening accuracy of battery qualification rate.

Description

Technical Field

[0001] The utility model relates to the technical field of battery capacity division, in particular to a battery capacity division device and a battery capacity division cabinet. Background Art

[0002] After lithium batteries are produced, they need to go through two steps: formation and capacity separation. The formation step is to activate the positive and negative electrode materials of the lithium battery; the capacity separation is to distinguish the capacity of the battery, identify and classify batteries in different capacity ranges. Both the formation and capacity separation steps essentially require charging and discharging the lithium battery, and the charging and discharging time must be recorded to complete the formation and capacity separation steps of the battery.

[0003] Nowadays, batteries are generally placed on a battery formation and capacity division cabinet for formation and capacity division, which is very convenient. However, real-time monitoring of battery temperature during battery formation and capacity division is also very important, which is related to the screening accuracy of battery qualification rate. In the prior art, the temperature of the battery during formation and capacity division is detected by directly contacting the battery body with a handheld temperature probe. This detection method requires frequent manual temperature measurement of the battery, which increases labor costs. It cannot achieve real-time temperature detection of the entire battery formation and capacity division process, which affects the screening accuracy of the battery qualification rate. On the other hand, when the handheld temperature probe is frequently contacted with the soft-pack battery for temperature measurement, the soft-pack battery is at risk of being damaged.

[0004] Therefore, there is an urgent need for a chemical separation and storage device and a chemical separation and storage cabinet to solve the above problems. Utility Model Content

[0005] Based on the above, the purpose of the utility model is to provide a battery capacity dividing device and a battery capacity dividing cabinet to solve the problems in the background technology of manually measuring the temperature of the battery with a handheld temperature probe during battery capacity dividing, resulting in high labor costs, affecting the screening accuracy of the battery qualification rate, and the possibility of soft-pack batteries being damaged.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model provides a chemical fractionation and capacity device, comprising:

[0008] Supporting uprights;

[0009] A tray is mounted on the supporting plate in a horizontal plane, a plurality of temperature probes are arranged at equal intervals on the central axis of the tray, and the tray is used to carry batteries;

[0010] A lower pressure plate is mounted above the tray, the lower pressure plate comprises two cross beams arranged parallel to each other, both ends of the two cross beams are respectively connected to fixing plates, and a plurality of electric contacts are installed on the cross beams at equal intervals;

[0011] The driving assembly includes a guide rod and a driving motor, one end of the guide rod passes through the two ends of the tray and is connected to the fixing plate, and the other end of the guide rod is connected to the output shaft of the driving motor; the driving motor is used to drive the guide rod to drive the lower pressing plate to move up and down;

[0012] The electric contactor is used to contact the positive and negative electrodes of the battery and charge and discharge the battery, and the temperature probe is used to monitor the real-time temperature of the battery during charging and discharging.

[0013] As an optional technical solution for a chemical fractionation device and a chemical fractionation cabinet, the temperature probe includes a probe body, a probe holder and a probe, the probe body fixes the lower end of the probe holder, the probe holder is installed on the bottom surface of the tray, one end of the probe is telescopically arranged on the probe body, and the other end of the probe passes through the tray and extends to the top of the tray.

[0014] As an optional technical solution for a chemical separation and containment device and a chemical separation and containment cabinet, the electric contactor includes a mounting seat, a buffer assembly and an electrode rod. The buffer assembly passes through the mounting seat and is installed at the bottom of the beam through the mounting seat. The electrode rod is telescopically arranged in the axial hole of the buffer assembly.

[0015] As an optional technical solution for a chemical separation and containment device and a chemical separation and containment cabinet, the buffer assembly includes a telescopic rod, a first elastic member and an annular limit member. The telescopic rod passes through the mounting seat and a nut is connected to the top of the telescopic rod. The annular limit member is threadedly connected to the bottom end of the telescopic rod. The first elastic member is sleeved on the telescopic rod and one end of the first elastic member abuts against the mounting seat and the other end abuts against the annular limit member.

[0016] As an optional technical solution for a chemical separation and containment device and a chemical separation and containment cabinet, the telescopic rod is a hollow structure with a limit block provided at its lower end, the upper end of the electrode rod is sequentially penetrated by the limit block and the axial hole of the telescopic rod and extends to the top of the telescopic rod, the lower end of the electrode rod extends to the bottom of the annular limit piece, a second elastic piece is sleeved on the electrode rod, one end of the second elastic piece abuts against a shoulder in the axial hole of the telescopic rod, and the other end of the second elastic piece abuts against the top of the limit block.

[0017] As an optional technical solution for a chemical separation and capacity device and a chemical separation and capacity cabinet, a convex tooth is provided at the bottom of the electrode rod, and a buffer pad is provided at the bottom of the annular limiter.

[0018] As an optional technical solution for a chemical fractionation and containment device and a chemical fractionation and containment cabinet, linear bearings are respectively installed on both sides of the tray, and the guide rod passes through the linear bearings to move up and down.

[0019] As an optional technical solution for a chemical separation and containment device and a chemical separation and containment cabinet, the drive motor is fixedly mounted on both sides of the supporting vertical plate, the telescopic rod of the drive motor is arranged parallel to the guide rod, and the end of the telescopic rod of the drive motor is fixedly connected to the bottom end of the guide rod through the drive plate.

[0020] As an optional technical solution for a chemical fractionation and containment device and a chemical fractionation and containment cabinet, a plurality of trays are provided, and the plurality of trays are arranged in parallel and at equal intervals on the supporting vertical plate, and a lower pressure plate is provided above each of the trays.

[0021] The utility model also provides a chemical separation and containment cabinet, comprising the above-mentioned multiple groups of chemical separation and containment devices and a cabinet body, wherein the multiple groups of chemical separation and containment devices are respectively mounted on both sides of the cabinet body in a mirror-symmetrical manner.

[0022] The beneficial effects of the utility model are:

[0023] The utility model provides a chemical separation device, including a supporting vertical plate; a tray for carrying batteries is installed on the supporting vertical plate in a horizontal plane, and a plurality of temperature probes are evenly spaced on the central axis of the tray; a lower pressure plate is provided above the tray, and a plurality of electric contacts are evenly spaced on the crossbeam of the lower pressure plate; one end of a guide rod passes through both ends of the tray and is connected to a fixed plate, and a driving motor is fixed on one side of the supporting vertical plate, and its output shaft is connected to the bottom end of the guide rod. Under the above structure, when the battery is chemically separated, the battery is placed on the tray, and its bottom abuts against the probe, and the driving motor drives the guide rod to move downward to drive the lower pressure plate to press down relative to the tray. At this time, the electrode rods on the two electric contacts at the relative positions of the two crossbeams abut against the positive and negative electrodes of the battery for charging and discharging. Since elastic parts are provided on the electrode rods and the telescopic rods, when the electric contacts are pressed down toward the battery, the first elastic part and the second elastic part are both compressed, and under the action of the first elastic part, the bottom end of the annular limiter abuts against the battery body or the pole ear to fix the battery on the tray; the electrode rods are placed on the second elastic part. Under the action of the component, it is in close contact with the electrode. Therefore, when the electric contactor is pressed down to charge and discharge the battery, the electrode rod can be closely contacted with the pole ear, and the battery can be fixed by the annular limiter. On the other hand, when the battery is placed on the tray, the bottom of the battery is in contact with the probe, and the probe will shrink relative to the probe body under the weight of the battery, thereby preventing the bottom of the battery and the probe from being damaged when the electric contactor generates pressure on the battery. By arranging a temperature probe on the tray, real-time temperature detection can be performed when the battery is divided into capacity, which reduces labor costs and improves the screening accuracy of battery qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0025] Figure 2This is a schematic diagram of the structure of the tray in the first embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the structural decomposition of the lower pressure plate in the first embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of the overall structure of the electric contactor in the first embodiment of the utility model;

[0028] Figure 5 This is an exploded view of the electric contactor in the first embodiment of the utility model;

[0029] Figure 6 It is a cross-sectional view of the electric contactor in the first embodiment of the utility model;

[0030] Figure 7 This is a schematic diagram of the overall structure of the temperature probe in the first embodiment of the present utility model;

[0031] Figure 8 It is a schematic diagram of the overall structure of the storage cabinet of Embodiment 2 of the utility model.

[0032] In the figure:

[0033] 1. Support the vertical board;

[0034] 2. tray; 21. temperature probe; 22. probe body; 23. probe bracket; 24. probe; 22. linear bearing;

[0035] 3. Lower pressure plate; 31. Crossbeam; 32. Electric contactor; 321. Mounting seat; 322. Buffer assembly; 3221. Telescopic rod; 3222. First elastic member; 3223. Annular stopper; 3224. Stopper block; 3225. Second elastic member; 3226. Buffer pad; 323. Electrode rod; 324. Protruding teeth; 33. Fixing plate;

[0036] 4. driving assembly; 41. guide rod; 42. driving motor; 43. driving plate;

[0037] 5. Cabinet body. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present utility model.

[0042] In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more than two. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] Embodiment 1

[0044] like Figure 1-7As shown, the utility model provides a chemical separation and storage device, which includes: a supporting upright plate 1; a tray 2, which is mounted on the supporting upright plate 1 in a horizontal plane, and a plurality of temperature probes 21 are evenly spaced on the central axis of the tray 2, and the tray 2 is used to carry batteries; a lower pressure plate 3, which is mounted above the tray 2, and the lower pressure plate 3 includes two cross beams 31 arranged parallel to each other, and the two ends of the two cross beams 31 are respectively connected to fixed plates 33, and a plurality of electric contacts 32 are evenly spaced on the cross beams 31; a driving component 4, including a guide rod 41 and a driving motor 42, one end of the guide rod 41 passes through the two ends of the tray 2 and is connected to the fixed plate 33, and the other end of the guide rod 41 is connected to the output shaft of the driving motor 42; the driving motor 42 is used to drive the guide rod 41 to drive the lower pressure plate to move up and down; wherein, the electric contact 32 is used to abut the positive and negative poles of the battery and charge and discharge the battery, and the temperature probe 21 is used to monitor the real-time temperature of the battery charging and discharging.

[0045] The utility model provides a charging and discharging device. When the battery is charged and discharging, the battery is placed on a tray 2, and its bottom is in contact with a probe 24. The driving motor 42 drives the guide rod 41 to move downward to drive the lower pressure plate 3 to press down relative to the tray 2. At this time, the electrode rods 323 on the two electric contacts 32 at the relative positions of the two cross beams 31 are in contact with the positive and negative electrodes of the battery for charging and discharging. Since elastic members are provided on the electrode rods 323 and the telescopic rods 3221, when the electric contacts 32 are pressed downward toward the battery, the first elastic member 3222 and the second elastic member 3225 are both compressed. Under the action of the first elastic member 3222, the bottom end of the annular limit member 3223 is in contact with the battery body or the pole ear, so that the battery is fixed on the tray. 2; the electrode rod 323 is in close contact with the electrode under the action of the second elastic member 3225. Therefore, when the electric contactor 32 is pressed down to charge and discharge the battery, the electrode rod 323 can be closely contacted with the pole ear, and the battery can be fixed by the annular limiter 3223; on the other hand, when the battery is placed on the tray 2, the bottom of the battery is in contact with the probe 24, and the probe 24 will shrink relative to the probe body 22 under the weight of the battery, thereby preventing the bottom of the battery and the probe 24 from being damaged when the electric contactor 32 generates pressure on the battery. By arranging the temperature probe 21 on the tray 2, the temperature of the battery can be detected in real time when the battery is divided into capacities, which reduces the labor cost and improves the screening accuracy of the battery qualification rate.

[0046] Specifically, Figure 1As shown, four but not limited to four trays 2 are provided, and a corner bracket is installed on each side of the two ends of the tray 2. The four trays 2 are respectively fixed and installed in parallel on one side surface of the supporting vertical plate 1 at equal intervals through the corner brackets. A lower pressure plate 3 is provided above each tray 2, and the spacing between each lower pressure plate 3 and the tray 2 is equal and is arranged above the tray 2 in parallel with the tray 2; therefore, when the driving motor 42 drives the guide rod 41 to drive the lower pressure plate 3 to press down toward the tray 2, each lower pressure plate 3 can approach the tray 2 synchronously, ensuring that the batteries on each tray 2 are subjected to the same pressure, avoiding uneven pressure on the batteries on multiple trays 2, and being unable to electrically connect the electrodes and the pole ears, or damaging the batteries and equipment due to excessive pressure. The arrangement of multiple trays 2 and multiple lower pressure plates 3 further improves the efficiency of battery capacity conversion. The top of the driving motor 42 is installed on both sides of the supporting vertical plate 1 through a bracket, and the telescopic rod 3221 of the driving motor 42 is arranged parallel to the guide rod 41, and the end of the telescopic rod 3221 of the driving motor 42 is fixedly connected with the bottom end of the guide rod 41 through the driving plate 43. When the telescopic rod 3221 of the driving motor 42 is extended, the guide rod 41 drives the lower pressure plate 3 to move downward, and when the telescopic rod 3221 of the driving motor 42 is retracted, the guide rod 41 drives the lower pressure plate 3 to rise.

[0047] Further, such as Figure 2 and Figure 3 As shown, a linear bearing 22 is installed at each end of the tray 2, and the guide rod 41 is inserted into the linear bearing 22 to slide up and down. The linear bearing 22 can reduce the wear of the guide rod 41 on the tray 2 when it moves up and down, thereby improving the durability and stability of the equipment; the fixed plate 33 is a cavity structure sleeved on both ends of the two beams 31, and a locking piece is provided in the cavity of the fixed plate 33, and the locking piece is composed of two locking blocks, and a semicircular locking groove is opened in the middle of each locking block. When the two locking blocks are assembled into a locking piece, the two semicircular locking grooves are combined into a limiting hole, and the diameter of the limiting hole It is smaller than the diameter of the guide rod 41. Therefore, when the guide rod 41 is penetrated by the locking piece, the two locking blocks are locked and fixed to each other by a screw, so that the guide rod 41 can be tightly clamped, so that the lower pressure plate 3 can rise and press down with the up and down movement of the guide rod 41; at the same time, the spacing and parallelism between the lower pressure plate 3 and the tray 2 can be adjusted by loosening and tightening the locking piece, so as to further improve the stability during battery charging; in addition, in order to strengthen the rigidity of the connection between the lower pressure plate 3 and the guide rod 41 to prevent the lower pressure plate 3 from deformation, a reinforcing plate is set on the upper end face of the fixing plate 33 to improve the rigidity of the lower pressure plate 3.

[0048] Furthermore, multiple electric contacts 32 are evenly spaced through the cross beam 31 and fixed on the cross beam 31, and two adjacent electric contacts 32 between two cross beams 31 are arranged on the same axis; the spacing between multiple temperature probes 21 is the same as the spacing between multiple electric contacts 32, and each temperature probe 21 and two adjacent electric contacts 32 between the cross beam 31 are arranged on the same axis and are located in the middle position of two adjacent electric contacts 32 between the cross beams 31. This structure makes the battery more convenient and stable during charging and discharging and temperature detection.

[0049] In this embodiment, if Figures 4 to 6 As shown, the electric contactor 32 includes a mounting seat 321, a buffer component 322 and an electrode rod 323; the buffer component 322 passes through the mounting seat 321 and is installed at the bottom of the crossbeam 31 through the mounting seat 321, wherein the buffer component 322 includes a telescopic rod 3221, a first elastic member 3222 and an annular stopper 3223, one end of the telescopic rod 3221 passes through the mounting seat 321 and extends to the upper end surface of the mounting seat 321; the annular stopper 3223 is threadedly connected to the bottom end of the telescopic rod 3221, the first elastic member 3222 is sleeved on the telescopic rod 3221, one end of which abuts against the mounting seat 321, and the other end abuts against the annular stopper 3223; the top end of the telescopic rod 3221 is threadedly connected to two nuts, and the two nuts are locked to each other on the telescopic rod 322 1; a through hole matching the electrode rod 323 is provided at the bottom of the annular stopper 3223; the telescopic rod 3221 is a hollow structure with a stopper 3224 provided at its lower end; the upper end of the electrode rod 323 is penetrated by the stopper 3224 and the axial hole of the telescopic rod 3221 in sequence and extends to the top of the telescopic rod 3221; the lower end of the electrode rod 323 extends to the bottom of the annular stopper 3223; a second elastic member 3225 is sleeved on the electrode rod 323; one end of the second elastic member 3225 abuts against the shoulder in the axial hole of the telescopic rod 3221, and the other end of the second elastic member 3225 abuts against the top of the stopper 3224; the first elastic member 3222 and the second elastic member 3225 mentioned above may be compression springs but are not limited to compression springs.

[0050] Under the above structure, when the battery is being charged, the battery is placed on the tray 2, and the driving motor 42 drives the guide rod 41 to drive the lower pressure plate 3 to move downward. At this time, the electric contact 32 approaches the battery ear. When the lower pressure plate 3 moves down to the target height, the bottom of the electrode rod 323 first contacts the battery ear. When the lower pressure plate 3 continues to move downward, the electrode rod 323 contracts upward relative to the telescopic rod 3221. However, under the elastic force of the second elastic member 3225, the bottom end of the electrode rod 323 always maintains a close contact with the battery ear. When the annular limit member 3223 contacts the battery ear or the battery body, the lower pressure plate 3 continues to move downward. Under the elastic force of the elastic member 3222, the annular limit member 3223 is pressed onto the battery ear or the battery body, thereby fixing the battery and making the battery more stable during the discharging. Due to the arrangement of the first elastic member 3222 and the second elastic member 3225, when the lower pressure plate 3 is pressed down, the electrode rod 323 and the annular limit member 3223 will not cause damage to the battery ear or the battery body, and at the same time, the battery can be stably charged and discharged and the temperature can be detected. In addition, the height of the multiple electric contacts 32 below the lower pressure plate 3 can be calibrated or adjusted by adjusting the locking position of the two nuts at the upper end of the telescopic rod 3221 on the telescopic rod 3221.

[0051] Further, such as Figure 6 As shown, a convex tooth 324 is provided at the bottom of the electrode rod 323, and the setting of the convex tooth 324 can make the electrical connection between the electrode rod 323 and the battery pole ear more stable; a buffer pad 3226 is provided at the bottom of the annular limit member 3223, and the buffer pad 3226 can be a rubber pad but is not limited to a rubber pad; the setting of the rubber pad enables the annular limit member 3223 to play a buffering role when abutting against the battery pole ear or the battery body, thereby reducing the wear on the battery.

[0052] In this embodiment, if Figure 7 As shown, the temperature probe 21 includes a probe body 22, a probe bracket 23 and a probe 24. The probe body 22 fixes the lower end of the probe bracket 23, and the probe bracket 23 is installed on the bottom surface of the tray 2. One end of the probe 24 is retractably arranged on the probe body 22, and the other end of the probe 24 passes through the tray 2 and extends to the top of the tray 2. When the battery is placed on the tray 2, the bottom of the battery and the probe 24 abut against each other. Under the gravity of the battery itself or the pressure exerted by the lower pressure plate 3 on the battery, the probe 24 will shrink relative to the probe body 22, but the probe 24 always maintains abutment with the bottom of the battery. Therefore, the temperature probe 21 can realize real-time monitoring of the temperature of the battery during capacity division; improve the progress of battery screening qualification rate and save labor costs; at the same time, this structure will not cause any damage to the soft-pack battery.

[0053] In this embodiment, the device for converting into capacity is provided with a plurality of temperature probes 21 at intervals on the central axis of the tray 2, so that when the battery is converting into capacity, the bottom of the battery directly contacts the probe 24 for temperature detection; this setting is compatible with the temperature monitoring of batteries of various specifications such as aluminum shells and soft packs; compared with the traditional method of measuring temperature by hand-held temperature probes or manually attaching temperature probes to the battery for temperature measurement, the device for converting into capacity realizes fully automated temperature monitoring of batteries of various specifications such as aluminum shells and soft packs, which not only saves a lot of labor costs, but also improves the efficiency of battery temperature detection, making the application of the device for converting into capacity more extensive. When the soft pack is charged and discharged, the charging and discharging is realized by electrically connecting the electrode clamp to the pole ear of the soft pack battery, and the aluminum shell battery is charged and discharged by contacting the pole ear of the battery through the electric contact 32.

[0054] Embodiment 2

[0055] In this embodiment, if Figure 8 As shown, the present invention also provides a battery capacity splitting cabinet, which includes a cabinet body 5 and a plurality of groups of capacity splitting devices arranged on two sides of the cabinet body 5, each group of capacity splitting devices are respectively installed on both sides of the cabinet body 5 in a mirror-symmetrical manner. The battery capacity splitting cabinet improves the efficiency of battery capacity splitting by integrating the plurality of groups of capacity splitting devices.

[0056] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A chemical fractionation device, characterized in that: include: Supporting uprights; A tray is mounted on the supporting plate in a horizontal plane, a plurality of temperature probes are arranged at equal intervals on the central axis of the tray, and the tray is used to carry batteries; A lower pressure plate is mounted above the tray, the lower pressure plate comprises two cross beams arranged parallel to each other, both ends of the two cross beams are respectively connected to fixing plates, and a plurality of electric contacts are installed on the cross beams at equal intervals; The driving assembly includes a guide rod and a driving motor, one end of the guide rod passes through the two ends of the tray and is connected to the fixing plate, and the other end of the guide rod is connected to the output shaft of the driving motor; the driving motor is used to drive the guide rod to drive the lower pressing plate to move up and down; The electric contactor is used to contact the positive and negative electrodes of the battery and charge and discharge the battery, and the temperature probe is used to monitor the real-time temperature of the battery during charging and discharging.

2. A chemical fractionation device according to claim 1, characterized in that: The temperature probe includes a probe body, a probe bracket and a probe, wherein the probe body fixes the lower end of the probe bracket, the probe bracket is mounted on the bottom surface of the tray, one end of the probe is telescopically arranged on the probe body, and the other end of the probe passes through the tray and extends to the top of the tray.

3. A chemical fractionation device according to claim 1, characterized in that: The electric contactor comprises a mounting seat, a buffer assembly and an electrode rod. The buffer assembly passes through the mounting seat and is installed at the bottom of the beam through the mounting seat. The electrode rod is telescopically arranged in the axial center hole of the buffer assembly.

4. A chemical fractionation device according to claim 3, characterized in that: The buffer assembly includes a telescopic rod, a first elastic member and an annular limiting member. The telescopic rod passes through the mounting seat and a nut is connected to the top of the telescopic rod. The annular limiting member is threadedly connected to the bottom end of the telescopic rod. The first elastic member is sleeved on the telescopic rod and one end of the first elastic member abuts against the mounting seat, and the other end abuts against the annular limiting member.

5. A chemical fractionation device according to claim 4, characterized in that: The telescopic rod is a hollow structure with a limit block at its lower end. The upper end of the electrode rod is penetrated by the limit block and the axial hole of the telescopic rod in sequence and extends to the top of the telescopic rod. The lower end of the electrode rod extends to the bottom of the annular limit piece. A second elastic piece is sleeved on the electrode rod, one end of the second elastic piece abuts against a shoulder in the axial hole of the telescopic rod, and the other end of the second elastic piece abuts against the top end of the limit block.

6. A chemical fractionation device according to claim 5, characterized in that: The bottom of the electrode rod is provided with a convex tooth, and the bottom of the annular limiting member is provided with a buffer pad.

7. The chemical fractionation device according to claim 1, characterized in that: Linear bearings are respectively installed on both sides of the tray, and the guide rod passes through the linear bearings to move up and down.

8. The chemical fractionation device according to claim 1, characterized in that: The drive motor is fixedly mounted on both sides of the support vertical plate, the telescopic rod of the drive motor is arranged parallel to the guide rod, and the end of the telescopic rod of the drive motor is fixedly connected to the bottom end of the guide rod through the drive plate.

9. A chemical fractionation device according to any one of claims 1 to 8, characterized in that: There are multiple trays, and the multiple trays are arranged in parallel on the supporting vertical plate with equal intervals, and a lower pressure plate is arranged above each of the trays.

10. A chemical storage cabinet, characterized in that: It comprises a plurality of groups of chemical separation and storage devices and a cabinet as described in any one of claims 1 to 8, wherein the plurality of groups of chemical separation and storage devices are respectively mounted on both sides of the cabinet in a mirror-symmetrical manner.

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