Calibration tool and formation system

Abstract

The utility model relates to the technical field of battery formation, in particular to a calibration tool and a formation system. The calibration tool comprises a support used for being placed on a press machine of the formation equipment; the pressure detection module is provided with a detection surface for detecting pressure; the lifting module is arranged on the bracket, and the lifting module is connected with the pressure detection module to drive the pressure detection module to ascend, so that the detection surface is in contact with a probe of the formation equipment; the distance detection module is arranged on the support, and the distance detection module is used for detecting the moving distance of the pressure detection module. By means of the calibration tool, whether the telescopic amount of the elevator is adjusted wrongly or not can be found.

Description

Technical Field

[0001] This application relates to the field of battery formation technology, and in particular to a calibration fixture and formation system. Background Technology

[0002] In the production and manufacturing process of lithium batteries, it is necessary to perform formation and capacity testing on the individual cells of the battery module. The testing process is as follows: the battery is placed in a press, the stroke of the press is adjusted to move upward, and the press is controlled to move upward until the probe is compressed by the battery to a preset amount. The battery is then charged and discharged through the circuit formed by the probe and the battery.

[0003] Currently, the upward movement of the press is controlled by adjusting the distance between the press's lifting mechanism and the stop column of the formation equipment. After switching to batteries of different heights, the extension and retraction of the lifting mechanism needs to be adjusted to adjust the distance between the lifting mechanism and the stop column, thereby adjusting the upward movement of the press to ensure that the probe is compressed to the preset amount.

[0004] Currently, the telescopic range of the elevator is adjusted manually, which may lead to errors in the adjustment. Such errors are not easily detected and could result in the battery being crushed by the probe or poor contact between the battery and the probe. Detecting these errors is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] This application discloses a calibration fixture and formation system that can confirm whether the extension / retraction amount of the elevator has been adjusted incorrectly.

[0006] To achieve the above objectives, in a first aspect, embodiments of this application disclose a calibration fixture applied to a chemical formation equipment, the calibration fixture comprising:

[0007] A support frame for placement on the press of a chemical formation device;

[0008] A pressure detection module having a detection surface for detecting pressure;

[0009] A lifting module is provided on the bracket. The lifting module is connected to the pressure detection module to drive the pressure detection module to rise, thereby making the detection surface contact the probe of the formation equipment.

[0010] A distance detection module is provided on the bracket and is used to detect the movement distance of the pressure detection module.

[0011] In one optional embodiment, the lifting module includes a motor and a transmission mechanism. The motor is mounted on the bracket and is connected to the transmission mechanism. The pressure detection module is connected to the transmission mechanism. The transmission mechanism is used to convert the rotational motion of the motor into linear lifting motion.

[0012] The distance detection module includes a rotary encoder, which detects the movement distance of the pressure detection module by detecting the number of rotations of the output shaft of the motor.

[0013] In one alternative embodiment, the transmission mechanism includes a meshing gear and a rack, the gear being connected to the output shaft of the motor, the rack extending vertically and slidingly engaging with the bracket in the vertical direction, and the rack being connected to the pressure detection module.

[0014] In an optional embodiment, the calibration fixture further includes a first sliding rail and a sliding seat. The first sliding rail is connected to the lifting module and extends along a first horizontal direction. The sliding seat slides in cooperation with the first sliding rail in the first horizontal direction, and the pressure detection module is disposed on the sliding seat.

[0015] In an optional embodiment, the calibration fixture further includes a mounting plate extending along the first horizontal direction, and the first sliding rail is connected to the lifting module via the mounting plate;

[0016] The mounting plate is provided with a plurality of first connecting parts spaced apart along the first horizontal direction, and the sliding seat is provided with a second connecting part, which can be detachably connected to each of the first connecting parts.

[0017] In an optional embodiment, the calibration fixture further includes a second sliding rail extending along a second horizontal direction, wherein the second horizontal direction is perpendicular to the first horizontal direction;

[0018] The mounting plate is connected to the lifting module via the second sliding rail, and the mounting plate and the second sliding rail slide in a sliding engagement in the second horizontal direction.

[0019] In one alternative embodiment, when the lifting module drives the pressure detection module to descend to its limit position, the detection surface of the pressure detection module is flush with or extends beyond the top surface of the bracket.

[0020] In one optional embodiment, the number of pressure detection modules includes two, with the two pressure detection modules located on opposite sides of the bracket.

[0021] In an optional embodiment, the calibration fixture further includes a conductive connector disposed on the bracket, wherein the pressure detection module and the lifting module are both electrically connected to the conductive connector, and the conductive connector is used to make electrical contact with the power supply terminal of the formation equipment.

[0022] Secondly, this application provides a formation system, comprising:

[0023] A press, wherein the press is equipped with a lifting mechanism and a battery storage compartment;

[0024] A needle bed is located above the press bed. The needle bed is provided with a probe and a stop. The stop is located above the elevator and can cooperate with the elevator for limiting.

[0025] A driving device, which is connected to at least one of the needle bed and the press, to drive the needle bed and the press to move toward or away from each other;

[0026] The calibration fixture described in any of the above embodiments can be located at the battery placement position.

[0027] Compared with related technologies, the beneficial effects of this application are:

[0028] When calibrating the extension and retraction of the lifting mechanism of the formation equipment using the calibration fixture of this application, the bracket can be placed on the press of the formation equipment. After controlling the lifting mechanism to extend or retract by a preset extension and retraction amount, the press is controlled to move upward until the lifting mechanism and the stop column of the formation equipment are limited. Then, the lifting module of this application is used to drive the pressure detection module to rise. When the value of the pressure detection module reaches the set value, the lifting module stops moving. At this time, the actual moving distance of the pressure detection module can be obtained through the distance detection module. By judging whether the actual moving distance is within the error range of the preset moving distance, it can be determined whether the extension and retraction amount of the lifting mechanism is adjusted incorrectly. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the calibration fixture disclosed in the embodiments of this application;

[0031] Figure 2 This is a schematic diagram of the formation system disclosed in the embodiments of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100. Support; 110. Receiving cavity;

[0034] 200. Lifting module;

[0035] 300. Pressure detection module;

[0036] 400. First sliding track;

[0037] 500. Sliding seat; 510. Second connecting part;

[0038] 610. Mounting plate; 620. Lifting plate;

[0039] 700, Second sliding track;

[0040] 800. Press; 810. Elevator;

[0041] 900, needle bed; 910, probe; 920, stop. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0044] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0045] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0046] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0047] The calibration fixture and formation system provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0048] like Figure 1 As shown in the embodiment of this application, a calibration fixture is disclosed, which is applied to a chemical formation equipment and can calibrate the extension and retraction of the elevator 810 of the chemical formation equipment. The calibration fixture includes:

[0049] The bracket 100 is used to place on the press 800 of the chemical formation equipment. The bracket 100 here is the mounting base for the pressure detection module 300, lifting module 200, distance detection module (not shown in the figure) and other components described below.

[0050] The pressure detection module 300 has a detection surface for detecting pressure. For example, the detection surface may be the top surface of the pressure detection module 300, and the pressure detection module 300 may be a pressure sensor, pressure transmitter, digital pressure gauge, etc., and this application does not limit this.

[0051] A lifting module 200 is mounted on the support 100 and is connected to the pressure detection module 300 to raise the pressure detection module 300, thereby bringing the detection surface into contact with the probe 910 of the formation equipment. Specifically, during the process of the lifting module 200 raising or lowering the pressure detection module 300, the distance between the detection surface of the pressure detection module 300 and the bottom surface of the support 100 will increase or decrease. In other words, the lifting module 200 can adjust the distance between the detection surface and the bottom surface of the support 100.

[0052] For example, when the lifting module 200 descends to its limit position, the height of the calibration fixture can be lower than the shortest battery that the formation equipment can be compatible with, so that the calibration fixture can simulate batteries of various sizes. The height of the calibration fixture can be the vertical distance between the highest and lowest points in the calibration fixture.

[0053] The distance detection module is mounted on the bracket 100 and is used to detect the movement distance of the pressure detection module 300.

[0054] When calibrating the extension and retraction of the lifting platform 810 of the formation equipment using the calibration fixture of this application, the bracket 100 can be placed on the press 800 of the formation equipment. After controlling the lifting platform 810 to extend or retract by a preset extension and retraction amount, the press 800 is controlled to move upward until the lifting platform and the stop 920 of the formation equipment are limited. Then, the lifting module 200 of this application is used to drive the pressure detection module 300 to rise. When the value of the pressure detection module 300 reaches the set value, the lifting module 200 stops moving. At this time, the actual moving distance of the pressure detection module 300 can be obtained through the distance detection module. By judging whether the actual moving distance is within the error range of the preset moving distance, it can be determined whether the extension and retraction amount of the lifting platform 810 is adjusted incorrectly. It should be noted that the preset moving distance of the lifting module 200 can be determined based on the distance between the terminal surface of the battery being tested and the bottom surface of the tray on which the battery is placed, the distance between the terminal surface of the next battery being tested and the bottom surface of the tray on which the battery is placed, the travel distance of the lifting module 810, the preset compression amount that the probe 910 needs to be compressed, and the distance between the detection surface of the pressure detection module 300 and the bottom surface of the bracket 100.

[0055] Furthermore, after confirming that the telescopic adjustment of the lifting platform 810 is incorrect, the telescopic adjustment of the lifting platform needs to be readjusted. The specific adjustment value D is (actual moving distance - preset moving distance). If D is positive, it controls the lifting platform 810 to rise by the absolute value of D; if D is negative, it controls the lifting platform 810 to fall by the absolute value of D. After the telescopic adjustment is completed, the telescopic adjustment of the lifting platform 810 is calibrated again. It can be seen that by using the calibration fixture of this application, not only can it be determined whether the telescopic adjustment of the lifting platform 810 is incorrect, but also, if the telescopic adjustment is incorrect, it can be adjusted and calibrated.

[0056] For ease of understanding, the following parameters are assigned values ​​to demonstrate the specific calibration process of the calibration fixture in this application. Please refer to [link / reference needed]. Figure 2 Assume that the distance R1 from the top detection surface of the pressure detection module 300 in the calibration fixture to the bottom surface of the bracket 100 is a known value of 100mm, which is shorter than the shortest battery compatible with the formation equipment. The height of the shortest battery is assumed to be 110mm (the distance from the surface of the battery terminal to the bottom surface of the tray that carries the battery).

[0057] The battery being tested is placed on the press 800. The distance R2 from the surface of the battery terminal to the bottom of the tray is a known value of 120mm. The travel stroke X1 of the lifting platform 810 is 160mm (the distance from the lifting platform 810 to the top stop 920), allowing the probe 910 to be compressed by 6mm by the battery terminal. It should be noted that the probe 910 is connected to a spring, which can extend and retract in the vertical direction.

[0058] If the height of the battery to be tested is higher, and the distance from the terminal surface of the battery to the bottom of the tray is R3 (a known value of 125mm), which is 5mm higher than the original battery (height 120mm), in order to ensure that the pressing amount of probe 910 is 6mm, then the lifting platform 810 needs to be raised by 5mm from the original base, so that the stroke of the lifting platform 810 is 160-5=155mm.

[0059] After the elevator 810 is raised from its original foundation, a calibration fixture is now used to test whether the elevator 810 has risen by 5mm. The calibration fixture is placed into the press 800, and the elevator 810 is stopped and limited by the stop column, that is, X1 = 0mm.

[0060] The lifting module 200 of the calibration fixture starts to rise. Normally, the distance from the top detection surface of the pressure detection module 300 to the bottom surface of the bracket 100 needs to be consistent with R3 (125mm). Therefore, the lifting module 200 needs to rise a preset moving distance (R3-R1) = 25mm to ensure that the pressing amount of the probe 910 is 6mm. When the pressing amount of the probe 910 is 6mm, the spring pressure of the probe 910 reaches the set value.

[0061] During the ascent of the lifting module 200, when the pressure detection module 300 detects that the spring force of the probe 910 has reached the set value, it controls the lifting module 200 to stop moving. If the lifting module 200 has moved upward a distance of L2 (actual distance), it can be determined whether L2 is equal to 25±1mm. If it is, it indicates that the extension / retraction amount of the lifting platform 810 is correctly adjusted; if it is not, it indicates that the extension / retraction amount of the lifting platform 810 is incorrectly adjusted. It should be noted that ±1mm is an error value, and the specific magnitude of the error value can be selected according to the actual situation.

[0062] For example, if the actual moving distance is 27mm and the preset moving distance is 25mm, the specific adjustment value D is 27-25=2mm, which means that the elevator needs to be controlled to rise by 2mm; if the actual moving distance is 23mm and the preset moving distance is 25mm, the specific adjustment value D is 23-25=-2mm, which means that the elevator needs to be controlled to fall by 2mm.

[0063] In one optional embodiment, the lifting module 200 includes a motor and a transmission mechanism. The motor is mounted on the bracket 100 and is connected to the transmission mechanism. The pressure detection module 300 is connected to the transmission mechanism, which converts the rotational motion of the motor into linear lifting motion. The specific working process is as follows: the motor's output shaft rotates, and the transmission mechanism converts the rotation of the output shaft into linear lifting motion, thereby driving the pressure detection module 300 to rise or fall.

[0064] The distance detection module includes a rotary encoder (not shown in the figure), which detects the travel distance of the pressure detection module 300 by detecting the number of rotations of the motor's output shaft. For example, the rotary encoder can be mounted on the motor's output shaft to detect the number of rotations of the output shaft.

[0065] The rotary encoder in this embodiment can detect the number of rotations of the motor's output shaft in real time. Since the transmission ratio of the transmission mechanism is fixed—that is, the lifting distance of the transmission mechanism is fixed for every rotation of the motor's output shaft—the lifting distance of the transmission mechanism can be accurately calculated based on the number of rotations of the motor's output shaft, thereby ensuring the accuracy of the extension / retraction of the calibration tooling calibrator 810. Of course, the distance detection module can also be a linear encoder, etc., and this application does not limit this.

[0066] In one alternative embodiment, the transmission mechanism includes a meshing gear and a rack, the gear being connected to the output shaft of the motor, the rack extending vertically and slidingly engaging with the bracket 100 in the vertical direction, and the rack being connected to the pressure detection module 300.

[0067] In this embodiment, the transmission mechanism includes gears and racks. Gear and rack transmissions are simple in structure and relatively small in size, allowing for a compact arrangement and reducing the volume of the calibration fixture. Furthermore, gear and rack transmissions can achieve high-precision linear motion. By precisely designing the tooth profiles of the gears and racks, the accuracy of the transmission ratio can be ensured, thereby guaranteeing the accuracy of the extension and retraction of the calibration fixture's lifting platform 810. Of course, the transmission mechanism can also include a linkage mechanism or a lead screw and nut mechanism; this application does not limit this. Alternatively, in some embodiments, the lifting module 200 may also include a cylinder to drive the pressure detection module 300 to rise and fall. This application does not limit the specific type of the lifting module 200.

[0068] Generally speaking, there are many types of batteries, and the distance between the two terminals in different types of batteries may be different. That is to say, after placing different types of batteries on the press 800, the position of the battery terminals on the press 800 may change. In order to make the position of the probe 910 correspond to the position of the terminals, the probe 910 needs to be moved. However, moving the probe 910 may cause the probe 910 to be misaligned with the pressure detection module 300, which in turn causes the calibration fixture to be unable to calibrate the extension and retraction of the elevator. In other words, the calibration fixture can only be used for a limited number of battery types.

[0069] In an optional embodiment, the calibration fixture further includes a first sliding rail 400 and a sliding seat 500, the first sliding rail 400 being connected to the lifting module 200, and the first sliding rail 400 being along a first horizontal direction ( Figure 1 Extending in the direction indicated by the arrow in the middle, the sliding seat 500 and the first sliding track 400 slide in a first horizontal direction, and the pressure detection module 300 is disposed on the sliding seat 500. It should be noted that when using the calibration fixture of the embodiment of this application, the first horizontal direction can be made parallel to the arrangement direction of the positive and negative terminals of the battery.

[0070] In this embodiment, the pressure detection module 300 is disposed on the sliding seat 500, and the sliding seat 500 slides in conjunction with the first sliding rail 400 in the first horizontal direction. After replacing with a different type of battery, the sliding seat 500 can be controlled to slide relative to the first sliding rail 400, thereby changing the relative position of the sliding seat 500 and the press 800, and further changing the relative position of the pressure detection module 300 and the press 800, so that the pressure detection module 300 is repositioned relative to the probe 910, so that the calibration fixture can be adapted to various types of batteries. Of course, the pressure detection module 300 can also be fixed relative to the bracket 100, and this application does not limit this.

[0071] In an optional embodiment, the calibration fixture further includes a mounting plate 610, which extends along a first horizontal direction. The first sliding rail 400 is connected to the lifting module 200 through the mounting plate 610. The mounting plate 610 is provided with a plurality of first connecting portions spaced apart along the first horizontal direction. The sliding seat 500 is provided with a second connecting portion 510, which can be detachably connected to each of the first connecting portions.

[0072] Before changing the position of the sliding seat 500, the first connecting part and the second connecting part 510 can be disconnected so that the sliding seat 500 can slide relative to the first sliding track 400. After changing the position of the sliding seat 500, the pressure detection module 300 will be repositioned relative to the probe 910. At this time, the first connecting part and the second connecting part 510 can be reconnected to prevent the sliding seat 500 from sliding relative to the first sliding track 400 and causing the pressure detection module 300 to be misaligned with the probe 910 again.

[0073] For example, both the first connecting part and the second connecting part 510 can be connecting holes. In this case, the calibration fixture also includes bolts. The bolts pass through the first connecting part and the second connecting part 510 to connect the first connecting part and the second connecting part 510 to fix the relative position of the sliding seat 500 and the bracket 100. Alternatively, one of the first connecting part and the second connecting part 510 can be a snap-fit ​​part and the other can be a mating part, with the snap-fit ​​part snapping into the mating part.

[0074] It should be noted that this application moves the position of the slide block 500 by manual operation, or the slide block 500 can be additionally driven.

[0075] In some cases, if the probes 910 distributed along the first horizontal direction are damaged or retracted, they cannot cooperate with the pressure detection module 300 to calibrate the extension and retraction of the elevator. To enable the calibration fixture to adapt to this condition, in an optional embodiment, the calibration fixture further includes a second sliding rail 700, which is distributed along the second horizontal direction (…). Figure 1 Extending in the direction indicated by the arrow in the middle, wherein the second horizontal direction is perpendicular to the first horizontal direction, the mounting plate 610 is connected to the lifting module 200 through the second sliding rail 700, and the mounting plate 610 and the second sliding rail 700 slide in cooperation in the second horizontal direction, that is, the mounting plate 610 can slide relative to the second sliding rail 700.

[0076] When the probes 910 distributed in the first horizontal direction are damaged or retracted, the mounting plate 610 can be controlled to slide in the second horizontal direction, thereby causing the sliding seat 500 and the pressure detection module 300 to slide in the second horizontal direction. This allows the pressure detection module 300 to be aligned with the probes 910 distributed in the second horizontal direction. By cooperating with the probes 910 distributed in the second horizontal direction, the extension and retraction of the elevator 810 can be calibrated. Therefore, the calibration fixture of this embodiment can adapt to more working conditions.

[0077] It should be noted that this application moves the position of the mounting plate 610 by manual operation, or additional drivers can be set for the mounting plate 610.

[0078] In an optional embodiment, the calibration fixture further includes a lifting plate 620, through which the second sliding rail 700 is connected to the lifting module 200. When this embodiment is combined with an embodiment where the transmission mechanism includes meshing gears and racks, the lifting plate 620 is connected to the rack.

[0079] In an optional embodiment, when the lifting module 200 drives the pressure detection module 300 to descend to its limit position, the detection surface of the pressure detection module 300 is flush with or extends beyond the top surface of the support 100. In this way, the risk of interference between the needle bed 900 and the support 100 can be reduced during the upward lifting of the press bed 800.

[0080] In one optional embodiment, the bracket 100 is provided with a receiving cavity 110, and the top of the bracket 100 is provided with an opening that extends vertically through the bracket 100 and is connected to the receiving cavity 110. The opening is used to allow the lifting module 200 to be installed in the receiving cavity 110. The lifting module 200 is located in the receiving cavity 110, and the detection surface is flush with or extends beyond the opening.

[0081] In this embodiment, the bracket 100 has a receiving cavity 110, and the lifting module 200 is disposed within the receiving cavity 110. That is, the lifting module 200 is shielded by the bracket 100. In this way, the bracket 100 can be used to protect the lifting module 200 from external impacts and prevent the operator from coming into contact with the moving lifting module 200, thereby improving the safety of the calibration fixture. Of course, the bracket 100 can also be a plate-shaped support, and this application does not limit the specific structure of the bracket 100.

[0082] In one alternative embodiment, the number of pressure detection modules 300 includes two, with the two pressure detection modules 300 located on opposite sides of the bracket 100.

[0083] In this embodiment, the pressure detection module 300 includes two modules. The two pressure detection modules 300 can verify each other's measurement results. If one module malfunctions or has an error, the other module can serve as a reference, thereby improving the reliability and accuracy of the calibration results. Of course, the number of pressure detection modules 300 may also be only one; this application does not limit the number of pressure detection modules 300.

[0084] In an optional embodiment, the calibration fixture further includes a conductive connector disposed on the support 100. The pressure detection module 300 and the lifting module 200 are both electrically connected to the conductive connector, which is used to make electrical contact with the power supply terminal of the formation equipment.

[0085] In this embodiment, the support 100 is also provided with a conductive connector. When the calibration fixture is connected to the formation equipment, the conductive connector makes electrical contact with the power supply terminal of the formation equipment. In this way, the formation equipment can be used to power the calibration fixture, eliminating the need for an external power supply for the calibration fixture and simplifying its structure. Of course, the conductive connector of the calibration fixture can also be connected separately to an external power source to power the calibration fixture.

[0086] In an optional embodiment, the calibration fixture can also interact with the controller of the formation equipment through the connection between the conductive connector and the power supply terminal, so that the controller can control the operation of the components (such as the pressure detection module 300, the lifting module 200, the distance detection module, etc.) in the calibration fixture and obtain the information detected by the components, such as the detection pressure detected by the pressure detection module 300 and the distance detected by the distance detection module. In this way, the calibration fixture does not need to be equipped with an additional controller, thereby further simplifying the structure of the calibration fixture.

[0087] like Figure 2 As shown in the embodiments, this application also discloses a formation system, including:

[0088] Press 800, press 800 is equipped with a lift 810, press 800 has a battery placement position, the battery placement position is used for a tray with battery or calibration fixture.

[0089] The needle bed 900 is located above the press bed 800. The needle bed 900 is equipped with a probe 910 and a stop 920. The stop 920 can be a stop post. The stop 920 is located above the elevator 810 and can cooperate with the elevator 810 for limiting. That is to say, during the process of the needle bed 900 and the press bed 800 moving towards each other, the elevator 810 and the stop 920 will cooperate to limit the movement of the needle bed 900 and the press bed 800 towards each other, and the distance between the stop 920 and the elevator 810 determines the stroke of the two moving towards each other.

[0090] A driving device is connected to at least one of the needle bed 900 and the press bed 800 to drive the needle bed 900 and the press bed 800 to move toward or away from each other.

[0091] The calibration fixture of any of the above embodiments enables the formation system of this application to have the beneficial effects of any of the above embodiments, which will not be described in detail here. The calibration fixture can be located at the battery placement position.

[0092] The foregoing embodiments of this application focus on describing the differences between various embodiments. As long as the different optimization features between embodiments are not contradictory, they can be combined to form better embodiments. For the sake of brevity, these differences will not be elaborated upon here. The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art, under the guidance of this application, can make many modifications without departing from the spirit and scope of the claims, all of which fall within the protection scope of this application.

Claims

1. A calibration fixture, characterized in that, The calibration fixture, applied to chemical formation equipment, includes: A support (100) is provided for placement on the press (800) of the formation equipment; A pressure detection module (300) having a detection surface for detecting pressure; A lifting module (200) is provided on the bracket (100). The lifting module (200) is connected to the pressure detection module (300) to drive the pressure detection module (300) to rise, thereby making the detection surface contact the probe (910) of the formation equipment. A distance detection module is provided on the bracket (100) and is used to detect the movement distance of the pressure detection module (300).

2. The calibration fixture according to claim 1, characterized in that, The lifting module (200) includes a motor and a transmission mechanism. The motor is mounted on the bracket (100) and is connected to the transmission mechanism. The pressure detection module (300) is connected to the transmission mechanism. The transmission mechanism is used to convert the rotational motion of the motor into linear lifting motion. The distance detection module includes a rotary encoder, which detects the movement distance of the pressure detection module (300) by detecting the number of rotations of the output shaft of the motor.

3. The calibration fixture according to claim 2, characterized in that, The transmission mechanism includes a meshing gear and a rack. The gear is connected to the output shaft of the motor. The rack extends vertically and slides in the vertical direction with the bracket (100). The rack is connected to the pressure detection module (300).

4. The calibration fixture according to claim 1, characterized in that, The calibration fixture further includes a first sliding rail (400) and a sliding seat (500). The first sliding rail (400) is connected to the lifting module (200). The first sliding rail (400) extends along a first horizontal direction. The sliding seat (500) slides in cooperation with the first sliding rail (400) in the first horizontal direction. The pressure detection module (300) is disposed on the sliding seat (500).

5. The calibration fixture according to claim 4, characterized in that, The calibration fixture also includes a mounting plate (610) that extends along the first horizontal direction, and the first sliding rail (400) is connected to the lifting module (200) through the mounting plate (610). The mounting plate (610) is provided with a plurality of first connecting parts spaced apart along the first horizontal direction, and the sliding seat (500) is provided with a second connecting part (510), which can be detachably connected to each of the first connecting parts.

6. The calibration fixture according to claim 5, characterized in that, The calibration fixture further includes a second sliding rail (700) that extends along a second horizontal direction, wherein the second horizontal direction is perpendicular to the first horizontal direction; The mounting plate (610) is connected to the lifting module (200) via the second sliding rail (700), and the mounting plate (610) and the second sliding rail (700) slide in the second horizontal direction.

7. The calibration fixture according to claim 1, characterized in that, When the lifting module (200) drives the pressure detection module (300) to descend to the limit position, the detection surface of the pressure detection module (300) is flush with or extends beyond the top surface of the bracket (100).

8. The calibration fixture according to claim 1, characterized in that, The number of pressure detection modules (300) includes two, and the two pressure detection modules (300) are respectively located on both sides of the bracket (100).

9. The calibration fixture according to claim 1, characterized in that, The calibration fixture also includes a conductive connector disposed on the bracket (100). The pressure detection module (300) and the lifting module (200) are both electrically connected to the conductive connector. The conductive connector is used to make electrical contact with the power supply terminal of the formation equipment.

10. A formation system, characterized in that, include: A press (800) is provided with a lift (810) and a battery placement position. A needle bed (900) is located above the press (800). The needle bed (900) is provided with a probe (910) and a stop (920). The stop (920) is located above the elevator (810) and can cooperate with the elevator (810) for limiting. A driving device connected to at least one of the needle bed (900) and the press (800) to drive the needle bed (900) and the press (800) to move toward or away from each other; The calibration fixture as described in any one of claims 1 to 9, wherein the calibration fixture can be disposed at the battery placement position.

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