A high-precision pressurized heating charge and discharge fixture compatible with soft-pack and steel-shell battery cells

Abstract

The present invention provides a high-precision pressurized heating charge and discharge fixture compatible with soft-pack and steel-shell battery cells, comprising: a fixed bottom plate; a load-bearing mechanism mounted on the fixed bottom plate; a movable push plate mechanism mounted on the front side of the load-bearing mechanism; a plastic suction box battery cell assembly located between the movable push plate mechanism and the load-bearing mechanism; a push plate transmission mechanism connected to the movable push plate mechanism; a driving mechanism connected to the push plate transmission mechanism; and a charge and discharge probe mechanism mounted above the load-bearing mechanism and disposed opposite to the plastic suction box battery cell assembly. This high-precision pressurized heating charge and discharge fixture compatible with soft-pack and steel-shell battery cells has a simple structure and ingenious design. Through the innovative structural design of the load-bearing mechanism, movable push plate mechanism, plastic suction box battery cell assembly, push plate transmission mechanism, and charge and discharge probe mechanism, it can achieve a one-time test of the pressurized heating charge and discharge of the battery cell, and has high measurement accuracy and high efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production, and particularly to a high-precision pressurized heating charge and discharge fixture compatible with soft-pack and steel-shell battery cells. Background Art

[0002] With the continuous progress of technology and the wide application of consumer lithium batteries, the technological competition in the 3C consumer lithium battery industry has become increasingly fierce. The industry has higher and higher requirements for the capacity of consumer lithium batteries, more extreme utilization rate of capacity, more accurate capacity, smaller volume, lighter weight, and higher safety performance. 3C consumer lithium batteries mainly include two types of batteries, namely, consumer soft-pack and steel-shell batteries. During the manufacturing process of steel-shell and soft-pack battery cells, tests of pressurized and heated charge and discharge are required. In the existing process, the pressurized charge and discharge test and the heated charge and discharge test are carried out in two different processes. It is necessary to first move the battery to the pressurized charge and discharge test process and then move it to the heated charge and discharge test process, resulting in low efficiency of pressurized heating charge and discharge. Summary of the Invention

[0003] Aiming at the deficiencies of the existing technology, the present invention provides a high-precision pressurized heating charge and discharge fixture compatible with soft-pack and steel-shell battery cells, which can achieve a one-time test of pressurized heating charge and discharge, and has high measurement accuracy and high efficiency.

[0004] To achieve the above technical solutions, the present invention provides a high-precision pressurized heating charge and discharge fixture compatible with soft-pack and steel-shell battery cells, comprising: a fixed bottom plate; a load-bearing mechanism mounted on the fixed bottom plate, the load-bearing mechanism including a reference plate vertically mounted on the fixed bottom plate, a pressure sensor mounted on the front side of the reference plate, a heat insulation plate mounted on the front side of the pressure sensor, a positioning and load-bearing plate mounted on the front side of the heat insulation plate, a first heating film mounted on the front side of the positioning and load-bearing plate, a first thermal conductive silicone pad mounted on the front side of the first heating film, and a transverse test probe mounted transversely on the positioning and load-bearing plate and sequentially penetrating through the first heating film and the first thermal conductive silicone pad and extending forward; a movable push plate mechanism, the movable push plate mechanism including two guide rods fixed transversely on the reference plate at parallel intervals, the movable push plate being fixed on the guide rods through linear bearings, a second heating film mounted on the rear side of the movable push plate, a second thermal conductive silicone pad mounted on the rear side of the second heating film, a blister box battery cell assembly, the blister box battery cell assembly being fixed on the positioning and load-bearing plate through a step pin penetrating through the first thermal conductive silicone pad and the first heating film and abutting against the front end of the transverse test probe, and the blister box battery cell assembly being located between the movable push plate mechanism and the load-bearing mechanism; a push plate transmission mechanism, the push plate transmission mechanism being mounted on the fixed bottom plate and connected to the movable push plate in the movable push plate mechanism through a floating joint; a driving mechanism, the driving mechanism being connected to the push plate transmission mechanism; and a charge and discharge probe mechanism, the charge and discharge probe mechanism being mounted above the load-bearing mechanism and disposed opposite to the blister box battery cell assembly.

[0005] In the above technical solutions, during actual operation, the blister box battery cell assembly is fixed on the positioning and load-bearing plate through a step pin penetrating through the first thermal conductive silicone pad and the first heating film. Then, the driving mechanism drives the push plate transmission mechanism to push the movable push plate in the movable push plate mechanism to move forward along the guide rods, so that the movable push plate presses the blister box battery cell assembly. The pressure borne by the blister box battery cell assembly can be accurately detected by the pressure sensor in the load-bearing mechanism, and thus can be fed back to the driving mechanism to accurately control the test pressure. When the preset pressure is reached, the battery cells in the blister box battery cell assembly can be subjected to a pressurized charge and discharge test through the charge and discharge probe mechanism. In addition, after the blister box battery cell assembly is pressed, the blister box battery cell assembly is heated by the first heating film mounted on the front side of the positioning and load-bearing plate and the second heating film mounted on the rear side of the movable push plate. When the blister box battery cell assembly reaches the set test temperature, the battery cells in the blister box battery cell assembly can be subjected to a heated charge and discharge test through the charge and discharge probe mechanism. In addition, a charge and discharge test of pressurizing and heating the blister box battery cell assembly simultaneously can be performed, realizing functions that cannot be achieved by existing test devices.

[0006] Preferably, the charge and discharge probe mechanism includes a support plate fixed to the top of the reference plate. A linear slide rail is horizontally installed along the transverse direction on the top of the support plate. A transverse slide plate is installed on the linear slide rail. A sliding cylinder is horizontally installed along the transverse direction on the support plate and connected to the transverse slide plate. A crimping cylinder is installed at the front end of the transverse slide plate and arranged vertically downward. A probe mounting plate is installed on the telescopic shaft of the crimping cylinder. A plurality of longitudinally arranged test probes are installed on the probe mounting plate and arranged vertically downward. During actual operation, the sliding cylinder can be used to drive the transverse slide plate to move on the linear slide rail, so as to accurately control the transverse position of the longitudinally arranged test probes installed on the transverse slide plate. The longitudinal position of the longitudinally arranged test probes can be driven by the crimping cylinder, so that the transverse and longitudinal positions of the longitudinally arranged test probes can be controlled, so as to accurately achieve the alignment detection of the blister box battery cell assembly.

[0007] Preferably, the left and right sides of the probe mounting plate are respectively connected to the transverse slide plate through sliding shafts. Linear bearings are installed at the connection between the sliding shafts and the transverse slide plate to enhance the stability of the probe mounting plate during longitudinal movement.

[0008] Preferably, the blister box battery cell assembly includes a blister box and a battery cell clamped in the blister box. The blister box is fixed on the positioning bearing plate through a stepped pin passing through the first heat-conducting silica gel pad and the first heating film, so as to facilitate the positioning and installation of the battery cell and the blister box.

[0009] Preferably, the blister box includes a front shell and a rear shell. A hanging hole for docking with the stepped pin is provided on the front shell. The rear shell is embedded in the front shell. The battery cell is clamped between the front shell and the rear shell. A battery cell center hole and a plurality of back holes are also provided on the front shell. Side blocks corresponding to the transverse test probes on the load-bearing mechanism are also provided on the side edges of the front shell. During actual operation, only need to clamp the battery cell between the front shell and the rear shell of the blister box, and then fix the blister box on the positioning bearing plate through the stepped pin, which greatly facilitates the feeding and replacement of the battery cell and the blister box.

[0010] Preferably, the push plate transmission mechanism includes a backing plate installed on the fixed bottom plate. A slide rail is provided on the backing plate. A slide plate is installed on the slide rail. A transmission lead screw is arranged parallel to the slide rail. The transmission lead screw and the slide plate are connected through a lead screw pair. The slide plate is connected to the movable push plate through a floating joint. During actual operation, the cooperation between the transmission lead screw and the lead screw pair can accurately drive the slide plate to move back and forth on the slide rail, and accurately push the movable push plate to move back and forth through the floating joint, so as to accurately control the appropriate pressure applied by the movable push plate to the blister box battery cell assembly.

[0011] Preferably, the driving mechanism includes a servo motor, and the output shaft of the servo motor is connected to the end of the transmission lead screw. During actual operation, the transmission lead screw is rotated by the servo motor, thereby providing power for the forward and backward movement of the movable push plate.

[0012] The beneficial effects of a high-precision pressurizing, heating, charging and discharging fixture for compatible soft-pack and steel-shell battery cells provided by the present invention are as follows: The high-precision pressurizing, heating, charging and discharging fixture for compatible soft-pack and steel-shell battery cells has a simple structure and ingenious design. Through the innovative structural design of the load-bearing mechanism, movable push plate mechanism, plastic suction box battery cell assembly, push plate transmission mechanism and charging and discharging probe mechanism, the one-time test of pressurizing, heating, charging and discharging of the battery cells can be realized, and the measurement accuracy is high and the efficiency is high. During actual operation, the plastic suction box battery cell assembly is fixed on the positioning load-bearing plate by passing through the first heat-conducting silica gel pad and the first heating film with a stepped pin, and then the driving mechanism drives the push plate transmission mechanism to push the movable push plate in the movable push plate mechanism to move forward along the guide rod, so that the movable push plate presses the plastic suction box battery cell assembly. The pressure borne by the plastic suction box battery cell assembly can be accurately detected by the pressure sensor in the load-bearing mechanism, so as to feedback to the driving mechanism to accurately control the test pressure. When the preset pressure is reached, the battery cells in the plastic suction box battery cell assembly can be subjected to a pressurized charging and discharging test through the charging and discharging probe mechanism. In addition, after the plastic suction box battery cell assembly is pressed, the plastic suction box battery cell assembly is heated by the first heating film installed on the front side of the positioning load-bearing plate and the second heating film on the rear side of the movable push plate. When the plastic suction box battery cell assembly reaches the set test temperature, the battery cells in the plastic suction box battery cell assembly can be subjected to a heating charging and discharging test through the charging and discharging probe mechanism. In addition, a charging and discharging test of pressurizing and heating the plastic suction box battery cell assembly simultaneously can be carried out, realizing functions that cannot be achieved by existing test devices. Description of the Drawings

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0014] Figure 2 It is a side view of the present invention.

[0015] Figure 3 It is a top view of the present invention.

[0016] Figure 4 It is a cross-sectional view of the installation position of the plastic suction box battery cell assembly in the present invention.

[0017] Figure 5 It is a three-dimensional structural schematic diagram of the charging and discharging probe mechanism in the present invention.

[0018] Figure 6 It is a three-dimensional structural schematic diagram of the plastic suction box battery cell assembly in the present invention.

[0019] In the figure: 1. Charge and discharge probe mechanism; 11. Support plate; 12. Linear slide rail; 13. Sliding cylinder; 14. Transverse slide plate; 15. Linear bearing; 16. Sliding shaft; 17. Crimping cylinder; 18. Longitudinal test probe; 19. Probe mounting plate; 2. Blister box battery cell assembly; 21. Front housing; 22. Rear housing; 23. Hanging hole; 24. Edge block; 25. Back hole; 26. Battery cell center hole; 3. Load-bearing mechanism; 31. Reference plate; 32. Pressure sensor; 33. Heat insulation plate; 34. Positioning load-bearing plate; 35. Transverse test probe; 36. First thermal conductive silicone pad; 37. First heating film; 4. Movable push plate mechanism; 41. Movable push plate; 42. Second heating film; 43. Second thermal conductive silicone pad; 44. Linear bearing; 45. Guide rod; 46. Floating joint; 5. Push plate transmission mechanism; 51. Pad; 52. Slide rail; 53. Lead screw pair; 54. Transmission lead screw; 55. Lead screw joint; 56. Slide plate; 6. Driving mechanism; 61. Servo motor; 62. Motor mounting plate; 7. Fixed bottom plate. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment: A high-precision pressurizing, heating, charging and discharging fixture compatible with soft-pack and steel-shell battery cells.

[0022] Referring to Figures 1 to 5 As shown, a high-precision pressurizing, heating, charging and discharging fixture compatible with soft-pack and steel-shell battery cells includes:

[0023] Fixed bottom plate 7.

[0024] The load-bearing mechanism 3 is installed on the fixed bottom plate 7. The load-bearing mechanism 3 includes a reference plate 31 vertically installed on the fixed bottom plate 7. A pressure sensor 32 is installed on the front side of the reference plate 31. A heat insulation plate 33 is installed on the front side of the pressure sensor 32. A positioning load-bearing plate 34 is installed on the front side of the heat insulation plate 33. The heat insulation plate 33 is located between the pressure sensor 32 and the positioning load-bearing plate 34 to ensure that the heat of the subsequent heating film will not affect the normal operation of the pressure sensor 32. A first heating film 37 is installed on the front side surface of the positioning load-bearing plate 34. A first thermal conductive silicone pad 36 is installed on the front side surface of the first heating film 37. During actual operation, the first heating film 37 is used for heating, and the first thermal conductive silicone pad 36 plays a good buffering role and transfers the heat of the first heating film 37 to the plastic suction box battery cell assembly 2. A transverse test probe 35 that transversely penetrates the first heating film 37 and the first thermal conductive silicone pad 36 in sequence and extends forward is installed transversely on the positioning load-bearing plate 34. The transverse test probe 35 can be connected to the battery cells in the plastic suction box battery cell assembly 2 to test the current and voltage changes of the plastic suction box battery cell assembly 2.

[0025] The movable push plate mechanism 4 includes two guide rods 45 that are horizontally fixed on the reference plate 31 in parallel at intervals. The movable push plate 41 is fixed on the guide rods 45 through linear bearings 44. A second heating film 42 is installed on the rear side surface of the movable push plate 41. A second thermal conductive silicone pad 43 is installed on the rear side surface of the second heating film 42. During actual operation, the function of the movable push plate mechanism 4 is to apply an appropriate pressure to the plastic suction box battery cell assembly 2 located on the load-bearing mechanism 3, and to realize the heating control of the plastic suction box battery cell assembly 2 through the cooperation between the second heating film 42 and the first heating film 37.

[0026] Blister box battery cell assembly 2, the blister box battery cell assembly 2 is fixed on the positioning and load-bearing plate 34 through a stepped pin passing through the first heat-conducting silicone pad 36 and the first heating film 37 and abuts against the front end of the lateral test probe 35, and the blister box battery cell assembly 2 is located between the movable push plate mechanism 4 and the load-bearing mechanism 3. The blister box battery cell assembly 2 includes a blister box and a battery cell clamped in the blister box. The blister box is fixed on the positioning and load-bearing plate 34 through a stepped pin passing through the first heat-conducting silicone pad 36 and the first heating film 37 to facilitate the positioning and installation of the battery cell and the blister box. The blister box includes a front shell 21 and a rear shell 22. A hanging hole 23 for docking with the stepped pin is provided on the front shell 21. The rear shell 22 is embedded in the front shell 21. The battery cell is clamped between the front shell 21 and the rear shell 22. A battery cell center hole 26 and a plurality of back holes 25 are also provided on the front shell 21. A side block 24 corresponding to the lateral test probe 35 on the load-bearing mechanism 3 is provided on the side edge of the front shell 21. During actual work, only need to clamp the battery cell between the front shell 21 and the rear shell 22 of the blister box, and then fix the blister box on the positioning and load-bearing plate 34 through the stepped pin, which greatly facilitates the feeding and replacement of the battery cell and the blister box.

[0027] Push plate transmission mechanism 5, the push plate transmission mechanism 5 is installed on the fixed bottom plate 7 and is connected to the movable push plate 41 in the movable push plate mechanism 4 through a floating joint 46. The push plate transmission mechanism 5 includes a backing plate 51. The backing plate 51 is installed on the fixed bottom plate 7. A slide rail 52 is provided on the backing plate 51. A slide plate 56 is installed on the slide rail 52. A transmission lead screw 54 is arranged parallel to the slide rail 52. The transmission lead screw 54 is connected to the slide plate 56 through a lead screw pair 53. The slide plate 56 is connected to the movable push plate 41 through a floating joint 46. During actual work, through the cooperation between the transmission lead screw 54 and the lead screw pair 53, the slide plate 56 can be accurately driven to move back and forth on the slide rail 52, and the movable push plate 41 can be accurately pushed back and forth through the floating joint 46, so that the appropriate pressure can be accurately applied to the blister box battery cell assembly 2 by the movable push plate 41. The function of the push plate transmission mechanism 5 is to perform a linear motion, convert the output torque into a linear motion force and transmit it to the movable push plate 41 through the floating joint 46 to pressurize the blister box battery cell assembly 2, and ensure that the force acting on the movable push plate 41 is a linearly perpendicular force.

[0028] Drive mechanism 6, the drive mechanism 6 includes a servo motor 61. The servo motor 61 is installed horizontally on the motor mounting plate 62. The output shaft of the servo motor 61 is connected to the end of the transmission lead screw 54. During actual work, the transmission lead screw 54 is driven to rotate by the servo motor 61, and further provides power for the back-and-forth movement of the movable push plate 41. Using the servo motor 61 has a better control effect. The generated torque can be transmitted to the floating joint 46 through the coupling and the transmission lead screw 54 to ensure a linearly straight motion of the force, so that the force-bearing point is located at the center of the battery cell.

[0029] Charging and discharging probe mechanism 1, the charging and discharging probe mechanism 1 is installed above the load-bearing mechanism 3 and is arranged facing the plastic blister box battery cell assembly 2. The charging and discharging probe mechanism 1 includes a support plate 11, the support plate 11 is fixed to the top of the reference plate 31, a linear slide rail 12 is installed horizontally along the top of the support plate 11, a transverse slide plate 14 is installed on the linear slide rail 12, a sliding cylinder 13 is installed horizontally along the transverse direction on the support plate 11 and is connected to the transverse slide plate 14, a pressing cylinder 17 arranged vertically downward is installed at the front end of the transverse slide plate 14, a probe mounting plate 19 is installed on the telescopic shaft of the pressing cylinder 17, and two longitudinally arranged test probes 18 are installed on the probe mounting plate 19 vertically downward. During actual operation, the sliding cylinder 13 can be used to drive the transverse slide plate 14 to move on the linear slide rail 12, so as to accurately control the transverse position of the longitudinally arranged test probe 18 installed on the transverse slide plate 14. The pressing cylinder 17 can be used to drive the longitudinal position of the longitudinally arranged test probe 18, so that the transverse and longitudinal positions of the longitudinally arranged test probe 18 can be controlled, so as to accurately achieve the alignment detection of the plastic blister box battery cell assembly 2. The left and right sides of the probe mounting plate 19 are respectively connected to the transverse slide plate 14 through sliding shafts 16, and linear bearings 15 are installed at the connection between the sliding shafts 16 and the transverse slide plate 14 to enhance the stability of the longitudinal movement of the probe mounting plate 19. In the present invention, the longitudinally arranged test probe 18 can be compatible with the charging and discharging voltage connection of soft-pack battery cells and steel-shell battery cells. When different battery cells are voltage-connected, the two states are automatically switched by the cylinder, without interference with each other, meeting the battery cell compatibility and not affecting the measurement pressure measurement accuracy.

[0030] In this embodiment, a high-precision pressure sensor 32, a heat insulation plate 33, a positioning load-bearing plate 34, a first heating film 37, and a first thermal conductive silica gel sheet 36 are sequentially installed on the reference plate 31 and do not contact other mechanisms, ensuring that the detection force of the pressure sensor 32 completely comes from the pressure of the battery cells in the plastic blister box battery cell assembly 2, and ensuring that the single battery cell pressure repeatability accuracy is within ±0.5 kgf. Moreover, the force application center of the high-precision pressure sensor 32 coincides with the center position of the battery cells in the plastic blister box battery cell assembly 2, and the coincidence method is realized through the positioning of the battery cells. In this embodiment, the force application point of the ball head type floating joint 46 is located at the center of the movable push plate 41, and the center point coincides with the center of the battery cell and the center of the pressure sensor 32, which can ensure the force application uniformity and improve the pressurization accuracy.

[0031] The high-precision pressurizing, heating, charging and discharging fixture compatible with soft-pack and steel-shell battery cells has a simple structure and ingenious design. Through the innovative structural design of the force-bearing mechanism 3, the movable push plate mechanism 4, the plastic suction box battery cell assembly 2, the push plate transmission mechanism 5 and the charging and discharging probe mechanism 1, it can achieve the one-time test of battery cell pressurizing, heating, charging and discharging, and has high measurement accuracy and high efficiency. During actual operation, the plastic suction box battery cell assembly 2 is fixed on the positioning force-bearing plate 34 through the step pin penetrating through the first heat-conducting silica gel pad 36 and the first heating film 37. Then, the servo motor 61 in the driving mechanism 6 drives the push plate transmission mechanism 5 to push the movable push plate 41 in the movable push plate mechanism 4 to move forward along the guide rod 45, so that the movable push plate 41 presses the plastic suction box battery cell assembly 2. The pressure borne by the plastic suction box battery cell assembly 2 can be accurately detected through the pressure sensor 32 in the force-bearing mechanism 3, and thus can be fed back to the servo motor 61 in the driving mechanism 6 to accurately control the test pressure. When the preset pressure is reached, the charging and discharging probe mechanism 1 can be used to perform the pressurizing, charging and discharging test on the battery cells in the plastic suction box battery cell assembly 2. In addition, after the plastic suction box battery cell assembly 2 is pressed, the plastic suction box battery cell assembly 2 is heated through the first heating film 37 installed on the front side of the positioning force-bearing plate 34 and the second heating film 42 on the rear side of the movable push plate 41. When the plastic suction box battery cell assembly 2 reaches the set test temperature, the charging and discharging probe mechanism 1 can be used to perform the heating, charging and discharging test on the battery cells in the plastic suction box battery cell assembly 2. In addition, it is also possible to simultaneously perform the charging and discharging test of pressurizing and heating the plastic suction box battery cell assembly 2, realizing the functions that cannot be achieved by existing test devices.

[0032] The above are the preferred embodiments of the present invention, but the present invention should not be limited to the content disclosed in this embodiment and the drawings. Therefore, all equivalent or modified implementations completed without departing from the spirit disclosed by the present invention fall within the protection scope of the present invention.

Claims

1. A high-precision pressurized heating charging and discharging fixture compatible with soft-pack and steel-shell battery cells, characterized in that include: Fixed bottom plate; A load-bearing mechanism installed on a fixed bottom plate, the load-bearing mechanism comprising a reference plate installed vertically on the fixed bottom plate, a pressure sensor installed on the front side of the reference plate, a heat insulation plate installed on the front side of the pressure sensor, a positioning load-bearing plate installed on the front side of the heat insulation plate, a first heating film installed on the front side of the positioning load-bearing plate, a first thermally conductive silicone pad installed on the front side of the first heating film, and a transverse test probe installed on the upper side of the positioning load-bearing plate, which sequentially penetrates the first heating film and the first thermally conductive silicone pad in the transverse direction and extends forward; A movable push plate mechanism, the movable push plate mechanism comprising two parallel guide rods fixed on the reference plate in a transverse direction at intervals, the movable push plate being fixed on the guide rods through a linear bearing, a second heating film being installed on the rear side of the movable push plate, and a second thermally conductive silicone pad being installed on the rear side of the second heating film; A blister box battery core assembly, wherein the blister box battery core assembly is fixed on the positioning bearing plate after passing through the first thermally conductive silicone pad and the first heating film through a step pin and abuts against the front end of the horizontal test probe, and the blister box battery core assembly is located between the movable push plate mechanism and the bearing mechanism; A push plate transmission mechanism, wherein the push plate transmission mechanism is mounted on the fixed bottom plate and connected to the movable push plate in the movable push plate mechanism through a floating joint; A driving mechanism connected to the push plate transmission mechanism; The charging and discharging probe mechanism is installed above the load-bearing mechanism and is arranged directly opposite to the blister box battery core assembly.

2. The high-precision pressurized heating charging and discharging fixture compatible with soft-pack and steel-shell battery cells as claimed in claim 1, characterized in that: The charging and discharging probe mechanism includes a support plate, which is fixed on the top of the reference plate. A linear slide is installed horizontally on the top of the support plate, and a horizontal slide is installed on the linear slide. A sliding cylinder is installed horizontally on the support plate and connected to the horizontal slide. A crimping cylinder is installed vertically downward at the front end of the horizontal slide. A probe mounting plate is installed on the telescopic axis of the crimping cylinder, and a plurality of longitudinal test probes are installed vertically downward.

3. The high-precision pressurized heating charging and discharging fixture compatible with soft-pack and steel-shell battery cells as claimed in claim 2, characterized in that: The left and right sides of the probe installation plate are respectively connected to the transverse slide plate through sliding shafts, and linear bearings are installed at the connection between the sliding shaft and the transverse slide plate.

4. The high-precision pressurized heating charging and discharging fixture compatible with soft-pack and steel-shell battery cells as claimed in claim 1, characterized in that: The blister box battery core assembly comprises a blister box and a battery core clamped in the blister box. The blister box is fixed on a positioning bearing plate after penetrating a first thermally conductive silicone pad and a first heating film through a step pin.

5. The high-precision pressurized heating charging and discharging fixture compatible with soft-pack and steel-shell battery cells as claimed in claim 4, characterized in that: The blister box includes a front shell and a rear shell, the front shell is provided with a hanging hole for docking with a step pin, the rear shell is embedded in the front shell, the battery cell is clamped between the front shell and the rear shell, the front shell is also provided with a battery cell center hole and multiple back holes, and the side of the front shell is also provided with an edge block corresponding to the horizontal test probe on the load-bearing mechanism.

6. The high-precision pressurized heating charging and discharging fixture compatible with soft-pack and steel-shell battery cells as claimed in claim 1, characterized in that: The push plate transmission mechanism includes a pad, which is mounted on a fixed base plate. A slide rail is provided on the pad, and a slide plate is mounted on the slide rail. A transmission screw is arranged parallel to the slide rail. The transmission screw and the slide plate are connected by a screw pair, and the slide plate is connected to the movable push plate by a floating joint.

7. The high-precision pressurized heating charging and discharging fixture compatible with soft-pack and steel-shell battery cells as claimed in claim 6, characterized in that: The driving mechanism comprises a servo motor, and an output shaft of the servo motor is connected to the end of a transmission screw rod.

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