Battery packaging mold and battery in-situ expansion rate testing device

Abstract

The utility model discloses a battery packaging mold and a battery in-situ expansion rate testing device. The battery packaging mold comprises a first driving mechanism, a base, a driving rotating disc and a plurality of driven rotating discs, the first driving mechanism is fixedly arranged on the base, the driving rotating disc and the driven rotating discs are arranged on the same working face of the base and are in rotating fit with the base, and the driving rotating disc is in transmission connection with the first driving mechanism; the driving rotary disc is further in transmission fit with a plurality of driven rotary discs at the same time, the driven rotary discs can be driven by a first driving mechanism to synchronously rotate around a selected axis in the same direction, first auxiliary fixing structures are further arranged on the driven rotary discs, and the thread fastening mechanism is provided with second auxiliary fixing structures. The first auxiliary fixing structure can be detachably connected with the second auxiliary fixing structure in the selected linear direction. According to the utility model, the original mode of manually tightening the nuts is changed, and the stress of the four nuts at the upper end of the die is ensured to be consistent in the assembling process of the battery packaging die.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery packaging mould and battery in situ expansion rate testing device especially, belong to battery testing technical field. BACKGROUND

[0002] In the charging process of graphite material, lithium ions are embedded between graphite layers, the interlayer spacing becomes larger, the SEI film is continuously broken and repaired, the volume changes, and the expansion continues to increase, and the discharge process is opposite. In the charging process of silicon-based material, alloying occurs, the volume change of the pole piece is larger, the material capacity decays faster, and the cycle performance and safety performance are affected, so it is necessary to test the expansion rate performance of the material. The battery is packaged by using the battery mould, and the thickness sensor can be used to monitor the thickness change of the pole piece of the battery in situ, and the in situ expansion rate can analyze the volume change source of the material in the charging and discharging process. The process of packaging the battery by using the battery mould is as shown in Figure 1 At present, the last process of battery packaging is to tighten the nut for connection, and the process is as follows: all nuts are arranged on the stud respectively, all nuts are first screwed to the position where resistance is felt, and then all nuts are tightened symmetrically, and the whole process is manually tightened by the assembly personnel. The probe of the thickness sensor is a point, and the whole pole piece is contacted by the electrode plug, and the expansion of the pole piece is a surface expansion. After the battery is packaged, the pole piece is tested and the thickness change is recorded under the force, and the force of the pole piece is directly related to the size of the thickness record. If the forces of the four nuts are inconsistent, the pressure of the pole piece caused by the electrode plug will also be inconsistent, so that the expansion rate performance test has errors, and there are also errors between different batteries.

[0003] At present, the battery mould used in the process of packaging the battery is manually rotated by the assembly personnel, and the force of each nut is judged according to the personal experience, so that the process of manually assembling and tightening the screw cannot guarantee that the forces of the four nuts are consistent, and the efficiency of the battery packaging process by manually rotating the nut and judging the force is low. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a battery packaging mould and battery in situ expansion rate testing device, so as to overcome the defects in the prior art.

[0005] In order to realize the foregoing utility model purposes, the utility model adopts the technical scheme of:

[0006] The first aspect of the utility model provides a kind of battery packaging mould, including first mould body, second mould body, auxiliary test component and multiple screw connection mechanisms, multiple screw fastening mechanisms, multiple the screw connection mechanisms are fixed on the first mould body, the first mould body and the second mould body can be fixedly combined by multiple screw connection mechanisms, multiple screw fastening mechanisms and form a packaging chamber, the screw fastening mechanism is connected with the screw connection mechanism, the auxiliary test component is arranged in the packaging chamber;

[0007] And, the battery packaging mould further includes: first driving mechanism, base, driving disc and multiple driven discs, the base is arranged on the second mould body, the first driving mechanism is fixedly arranged on the base, the driving disc, multiple the driven disc is arranged on the same working surface of the base and is rotationally matched with the base, the driving disc is transmissionally connected with the first driving mechanism, the driving disc is also transmissionally matched with multiple the driven disc, multiple the driven disc can be synchronously and co-directionally rotated around selected axis under the driving of the first driving mechanism, the screw fastening mechanism is fixedly connected with the driven disc and can be synchronously rotated with the driven disc, so that the screw fastening mechanism is tightened or loosened.

[0008] The second aspect of the utility model embodiment provides a kind of battery in situ expansion rate testing device, including thickness sensor and the battery packaging mould, and the thickness sensor is used to monitor the thickness of the pole piece of the battery being packaged.

[0009] Compared with prior art, the utility model has the advantages that the battery packaging mould provided by the utility model embodiment is simple in structure and convenient to use, changes the original manual nut tightening mode, ensures that the stress of the four nuts on the upper end of the battery packaging mould is uniform during assembly, and improves the assembly and testing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical scheme in the embodiments of the present application or prior art, the drawings needed in the embodiment or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0011] Figure 1 is an assembly flow chart of a battery packaging mould in prior art;

[0012] Figure 2 is a top view of a battery packaging mould provided in a typical embodiment of the utility model;

[0013] Figure 3 is a side view of a battery packaging mold provided in a typical embodiment case of the utility model. DETAILED DESCRIPTION

[0014] In view of the deficiencies in the prior art, the present inventors have long studied and practiced to come up with the technical solution of the utility model. The technical solution, its implementation process and principles will be further explained as follows.

[0015] Term explanation: in situ: real-time recording of the state in the charging and discharging of the battery; in situ expansion: real-time recording of the expansion change of the battery material in the charging and discharging process.

[0016] The first aspect of the utility model provides a kind of battery packaging mold, including first mould body, second mould body, auxiliary test component and multiple screw connection mechanisms, multiple screw connection mechanisms are fixed on the first mould body, the first mould body and the second mould body can be fixedly combined by multiple screw connection mechanisms, multiple screw fastening mechanisms and enclosed to form a packaging chamber, the screw fastening mechanism is connected with the screw connection mechanism, the auxiliary test component is arranged in the packaging chamber;

[0017] And, the battery packaging mold further includes: first driving mechanism, base, driving disc and multiple driven discs, the base is arranged on the second mould body, the first driving mechanism is fixedly arranged on the base, the driving disc, multiple driven discs are arranged on the same working surface of the base and are rotationally matched with the base, the driving disc is transmissionally connected with the first driving mechanism, the driving disc is also transmissionally matched with multiple driven discs, multiple driven discs can be synchronously and co-directionally rotated around selected axis under the driving of the first driving mechanism, the screw fastening mechanism is fixedly connected with the driven disc and can be synchronously rotated with the driven disc, so that the screw fastening mechanism is tightened or loosened.

[0018] Further, multiple driven discs are arranged around the driving disc, and the structure and size of multiple driven discs are the same, and the distance between the geometric center of multiple driven discs and the geometric center of the driving disc is the same.

[0019] Further, the geometric centers of multiple driven discs are distributed on a circumference, and the center of the circumference coincides with the geometric center of the driving disc.

[0020] Further, on the circumference, multiple driven discs are equally spaced.

[0021] Further, the axes of multiple driven discs are parallel.

[0022] Further, the axis of the driven turntable is parallel to the axis of the driven turntable.

[0023] Further, the selected axis is parallel to the axis of the driven turntable and the axis of the driven turntable.

[0024] Further, the circumferential side of the driving turntable and the circumferential side of the driven turntable are provided with convex tooth structures, and the driving turntable and the driven turntable are in transmission cooperation by engagement.

[0025] Further, the driven turntable is further provided with a first auxiliary fixing structure, the threaded fastening mechanism is provided with a second auxiliary fixing structure, and only when the posture of the second auxiliary fixing structure is the same as the posture of the first auxiliary fixing structure, the first auxiliary fixing structure can be detachably connected with the second auxiliary fixing structure along the selected straight line direction.

[0026] Further, the first auxiliary fixing structure and the second auxiliary fixing structure are connected by means of mortise and tenon connection.

[0027] Further, the first auxiliary fixing structure includes two slot structures, and the second auxiliary fixing structure includes two convex structures, when the posture of the second auxiliary fixing structure is the same as the posture of the first auxiliary fixing structure, the connecting line of the two slot structures contained in the first auxiliary fixing structure is parallel to the connecting line of the two convex structures contained in the second auxiliary fixing structure, the two convex structures are respectively embedded in the two slot structures, and the threaded fastening mechanism can rotate synchronously with the driven turntable.

[0028] Further, a plurality of the first auxiliary fixing structures are arranged in parallel.

[0029] In a more specific embodiment, the battery packaging mold further comprises a second driving mechanism and a support, the second driving mechanism is fixed on the support, the support is arranged on the first mold body, the second driving mechanism is in transmission connection with the base, and is used to drive the base to move along the selected straight line direction together with the driving turntable and the plurality of driven turntables, so that the first auxiliary fixing structure and the second auxiliary fixing structure are connected or separated along the selected straight line direction, and the second driving mechanism is also used to simultaneously apply pressure to the plurality of threaded fastening mechanisms along the selected straight line direction.

[0030] Further, the second driving mechanism is a linear driving mechanism, or the second driving mechanism is a rotary driving mechanism, a gear is fixed on a transmission shaft of the second driving mechanism, a connecting rod is fixedly arranged on the base, a convex tooth structure is arranged on the connecting rod, and the gear is engaged with the convex tooth structure on the connecting rod.

[0031] Further, the battery packaging mold further comprises a power supply, and the power supply is electrically connected with the first driving mechanism and the second driving mechanism.

[0032] Further, the battery packaging mold further comprises a controller, and the controller is electrically connected with the first driving mechanism and the second driving mechanism, and is used for adjusting the rotating direction of the transmission shaft of the first driving mechanism and the second driving mechanism.

[0033] The second aspect of the embodiment of the utility model provides a kind of battery in situ expansion rate testing device, including thickness sensor and the battery packaging mold, the battery packaging mold is used to package battery, and the thickness sensor is used to monitor the thickness of the pole piece of battery being packaged.

[0034] The technical scheme, its implementation process and principle will be further explained and described as follows by combining with the drawings and specific implementation cases, except for the special description, such as motor, cylinder, gear and other functional mechanisms used in the embodiment of the utility model are known in the art, which can be realized by.

[0035] Embodiment

[0036] A kind of battery in situ expansion rate testing device, including thickness sensor and battery packaging mold, the battery packaging mold is used to package battery, and the thickness sensor is used to monitor the thickness of the pole piece of battery being packaged.

[0037] In the embodiment, the battery packaging mold includes a first mold body, a second mold body, an auxiliary test assembly, a plurality of threaded connection mechanisms and a plurality of threaded fastening mechanisms. The plurality of threaded connection mechanisms are fixed to the first mold body. The first mold body and the second mold body can be fixed and combined by the plurality of threaded connection mechanisms and the plurality of threaded fastening mechanisms to form an enclosed chamber. The threaded fastening mechanisms are threadedly connected with the threaded connection mechanisms. The auxiliary test assembly is arranged in the enclosed chamber.

[0038] Specifically, the first mold body, the second mold body, the auxiliary test assembly, the matching structure and the mode between the plurality of threaded connecting mechanisms and the plurality of threaded fastening mechanisms are known in the art. More specifically, the plurality of threaded connecting mechanisms are fixedly arranged at the outer circumferential region of the first mold body at equal intervals along the circumference of the first mold body. The second mold body is provided with a plurality of connecting holes, and each of the plurality of connecting holes corresponds to one of the plurality of threaded connecting mechanisms. The plurality of threaded connecting mechanisms are threadedly connected to the plurality of threaded fastening mechanisms. By rotating the threaded fastening mechanisms, the first mold body and the second mold body can be tightly combined, and a packaging cavity for testing can be formed between the first mold body and the second mold body. More specifically, the threaded connecting mechanism can be a threaded connecting column, and the threaded fastening mechanism can be a butterfly nut.

[0039] Of course, in order to ensure that the first mold body and the second mold body form a seal, an insulating sleeve and a sealing ring can also be provided between the first mold body and the second mold body. These are known in the art and will not be described in detail here. Specifically, the auxiliary test assembly can include an electrode plug, a spring, a pole piece positioning ring, and the like. These will not be described in detail here.

[0040] In this embodiment, please refer to Figure 2 and Figure 3 In order to ensure that the plurality of threaded fastening mechanisms are uniformly stressed during the battery packaging process, the battery in-situ expansion rate testing device of the present embodiment further comprises a first driving mechanism 200, a base 100, a driving turntable 300 and a plurality of driven turntables 400. The base 100 is arranged on the second mold body, the first driving mechanism 200 is fixedly arranged on the base 100, the driving turntable 300 and the plurality of driven turntables 400 are arranged on the same working surface of the base 100 and are in rotational cooperation with the base 100, the driving turntable 300 is in transmission connection with the first driving mechanism 200, the driving turntable 300 is also in transmission cooperation with the plurality of driven turntables 400, the plurality of driven turntables 400 can be synchronously and uniformly rotated around the selected axis under the driving of the first driving mechanism 200, the threaded fastening mechanism is fixedly connected to the driven turntable 400 and can be synchronously rotated with the driven turntable 400, so that the plurality of threaded fastening mechanisms are synchronously tightened or loosened, and the stress of the plurality of threaded fastening mechanisms during the rotation is kept uniform.

[0041] In the embodiment, the plurality of driven turntables 400 are arranged around the driving turntable 300, in order to further ensure that the forces of the plurality of threaded fastening mechanisms remain consistent during the screwing process, the structures and sizes of the plurality of driven turntables 400 are the same, and the distances between the geometric centers of the plurality of driven turntables 400 and the geometric center of the driving turntable 300 are the same. More specifically, the geometric centers of the plurality of driven turntables 400 are distributed on a circumference, the center of the circumference coincides with the geometric center of the driving turntable 300, and on the circumference, the plurality of driven turntables 400 are distributed at equal intervals.

[0042] In the embodiment, the axes of the plurality of driven turntables 400 are parallel, and the axes of the driven turntables 400 are parallel to the axes of the driven turntables 400, the selected straight line direction is parallel to the selected axis, and the selected axis is also parallel to the axes of the driven turntables 400 and the axes of the driven turntables 400.

[0043] In the embodiment, the circumferential sides of the driving turntable 300 and the driven turntables 400 each have a convex tooth structure, and the driving turntable 300 and the driven turntables 400 are transmissionally matched through meshing.

[0044] In the embodiment, the first auxiliary fixing structure 410 is further arranged on the driven turntable 400, the threaded fastening mechanism has a second auxiliary fixing structure, and only when the posture of the second auxiliary fixing structure is the same as the posture of the first auxiliary fixing structure 410, the first auxiliary fixing structure 410 can be detachably connected with the second auxiliary fixing structure along the selected straight line direction. Specifically, the first auxiliary fixing structure 410 and the second auxiliary fixing structure are connected through a mortise and tenon connection.

[0045] In the embodiment, the first auxiliary fixing structure 410 includes two slot structures, the second auxiliary fixing structure includes two protruding structures, when the posture of the second auxiliary fixing structure is the same as the posture of the first auxiliary fixing structure 410, the connecting line of the two slot structures included in the first auxiliary fixing structure 410 is parallel to the connecting line of the two protruding structures included in the second auxiliary fixing structure, the two protruding structures are respectively embedded in the two slot structures, and the threaded fastening mechanism can rotate synchronously with the driven turntable 400. Wherein, the plurality of first auxiliary fixing structures 410 are arranged in parallel, through such arrangement, the plurality of first auxiliary fixing structures 410 have the same structure and posture, and only when the posture of the second auxiliary fixing structure is the same as the posture of the first auxiliary fixing structure 410, the plurality of driven turntables 400 can be connected with the plurality of threaded fastening mechanisms respectively, so as to realize synchronous rotation, which can ensure that the plurality of threaded fastening mechanisms have the same initial state when the driven turntable 400 is connected with the threaded fastening mechanism, and further ensure that the forces of the plurality of threaded fastening mechanisms remain consistent during the screwing process.

[0046] In the embodiment, the base 100 together with the driven turntable 400 on the base 100 can be covered on the second mold body integrally, and connected with the plurality of threaded fastening mechanisms above the second mold body. In order to avoid the influence of the threaded fastening mechanisms during the screwing process, the driven turntable 400 and the base 100 can be provided with avoiding holes corresponding to the plurality of threaded fastening mechanisms. It can be understood that the aforementioned first auxiliary fixing structure 410 is distributed in the peripheral area of the avoiding holes.

[0047] In the embodiment, in order to realize the stable connection or disconnection of the plurality of driven turntables 400 on the base 100 and the plurality of threaded fastening mechanisms above the second mold body, the battery packaging mold can further comprise a second driving mechanism 600 and a support. The second driving mechanism 600 is fixed on the support, and the support is arranged on the first mold body or the second mold body. The second driving mechanism 600 is in transmission connection with the base 100, and is used to drive the base 100 together with the driven turntable 400 and the plurality of driven turntables 400 on the base 100 to move along a selected straight line direction, so that the first auxiliary fixing structure 410 and the second auxiliary fixing structure are connected or disconnected along the selected straight line direction. In addition, the second driving mechanism 600 is also used to simultaneously apply pressure to the plurality of threaded fastening mechanisms along the selected straight line direction.

[0048] In the embodiment, the second driving mechanism 600 is a linear driving mechanism, or the second driving mechanism 600 is a rotary driving mechanism. A gear is fixed on the transmission shaft of the second driving mechanism 600. A connecting rod 500 is fixedly arranged on the base 100. The connecting rod 500 is provided with a protruding tooth structure. The gear is engaged with the protruding tooth structure on the connecting rod 500.

[0049] Of course, the battery packaging mold can further comprise a power supply 700. The power supply 700 is in electrical connection with the first driving mechanism 200 and the second driving mechanism 600. Of course, in order to realize the electric control of the whole device, the battery packaging mold can further comprise a controller. The controller is in electrical connection with the first driving mechanism 200 and the second driving mechanism 600, and is used to adjust the rotation direction of the transmission shaft of the first driving mechanism 200 and the second driving mechanism 600. It should be noted that the power supply 700 and the controller can be obtained from the market. The circuit structure between the controller and the power supply 700 and the numerical control program used by the controller are obtained from the market, and are not limited here.

[0050] For example, the first driving mechanism 200 and the second driving mechanism 600 in the embodiment can be servo motors, and the specific model is not limited here.

[0051] In the experiment of the battery in-situ expansion rate testing device provided in the embodiment, first, the battery to be tested is arranged between the first mold body and the second mold body, a plurality of threaded fastening mechanisms are arranged on the plurality of threaded connecting mechanisms respectively, the plurality of threaded fastening mechanisms keep the same posture, and the screwing amount between the threaded fastening mechanism and the threaded connecting mechanism also keeps consistent, at the beginning of the experiment, the clockwise rotation switch of the controller is pressed, the power supply 700 is powered, the second driving mechanism 600 rotates clockwise, the second driving mechanism 600 drives the plurality of driven turntables 400 on the base 100 to move downward and connect with the plurality of threaded fastening mechanisms, then the first driving mechanism 200 rotates clockwise to drive the plurality of driven turntables 400 to rotate synchronously with the plurality of threaded fastening mechanisms, so that the stress of the plurality of threaded fastening mechanisms is uniform. When the gear on the second driving mechanism 600 contacts the gear at one end of the connecting rod 500, the power supply 700 is cut off, at this time, the threaded fastening mechanism has been screwed to the preset position, when the power supply 700 is cut off, the battery mold is removed, the second driving mechanism 600 rotates counterclockwise to realize the reset of the second driving mechanism 600.

[0052] The battery packaging mold provided in the embodiment has the advantages of simple structure, convenient use, changed original manual nut tightening mode, consistent stress of four nuts on the upper end of the mold during assembly process of the battery packaging mold, and improved assembly and test efficiency.

[0053] It should be understood that the above embodiments are only for illustrating the technical concept and characteristics of the utility model, the purpose is to enable people skilled in the art to understand the content of the utility model and implement it, and cannot limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit and essence of the utility model should be covered within the protection scope of the utility model.

Claims

1. A battery packaging mold, comprising a first mold body, a second mold body, an auxiliary test assembly, a plurality of threaded connecting mechanisms, a plurality of threaded fastening mechanisms, the plurality of threaded connecting mechanisms being fixed on the first mold body, the first mold body and the second mold body being capable of being fixedly combined and enclosing a packaging cavity via the plurality of threaded connecting mechanisms and the plurality of threaded fastening mechanisms, the threaded fastening mechanisms being threadedly connected with the threaded connecting mechanisms, the auxiliary test assembly being arranged in the packaging cavity; characterized in that Further comprising: a first driving mechanism, a base, a driving turntable, and a plurality of driven turntables, the base being arranged on the second mold body, the first driving mechanism being fixedly arranged on the base, the driving turntable and the plurality of driven turntables being arranged on the same working surface of the base and rotationally matched with the base, the driving turntable being transmissionally connected with the first driving mechanism, the driving turntable being further transmissionally matched with the plurality of driven turntables, the plurality of driven turntables being capable of being synchronously and identically rotated around selected axes under the driving of the first driving mechanism, the threaded fastening mechanisms being fixedly connected with the driven turntables and being capable of being synchronously rotated with the driven turntables, so that the threaded fastening mechanisms are tightened or loosened.

2. The battery packaging mold of claim 1, wherein: The plurality of driven turntables are arranged around the driving turntable, the structure and size of the plurality of driven turntables are identical, and the distance between the geometric centers of the plurality of driven turntables and the geometric center of the driving turntable is identical.

3. The battery packaging mold of claim 2, wherein: The geometric centers of the plurality of driven turntables are distributed on a circumference, and the center of the circumference coincides with the geometric center of the driving turntable.

4. The battery packaging mold of claim 3, wherein: On the circumference, the plurality of driven turntables are equally spaced.

5. The battery packaging mold of claim 3, wherein: The axes of the plurality of driven turntables are parallel.

6. The battery packaging mold of claim 3 or 5, wherein: The axis of the driven turntable is parallel to the axis of the driven turntable.

7. The battery packaging mold of claim 6, wherein: The selected axis is parallel to the axis of the driven turntable and the axis of the driven turntable.

8. The battery packaging mold of claim 1 or 2, wherein: The circumferential side surfaces of the driving turntable and the driven turntable each have a convex tooth structure, and the driving turntable and the driven turntable are transmissionally matched by meshing.

9. The battery packaging mold of claim 1, wherein: The driven turntable further comprises a first auxiliary fixing structure, and the threaded fastening mechanism comprises a second auxiliary fixing structure, the first auxiliary fixing structure being separably connected with the second auxiliary fixing structure along a selected linear direction only when the posture of the second auxiliary fixing structure is identical to the posture of the first auxiliary fixing structure.

10. The battery packaging mold of claim 9, wherein: The first auxiliary fixing structure and the second auxiliary fixing structure are connected by a mortise and tenon connection.

11. The battery packaging mold of claim 10, wherein: The first auxiliary fixing structure comprises two slot structures, and the second auxiliary fixing structure comprises two convex structures, when the posture of the second auxiliary fixing structure is identical to the posture of the first auxiliary fixing structure, the line connecting the two slot structures included in the first auxiliary fixing structure is parallel to the line connecting the two convex structures included in the second auxiliary fixing structure, and the two convex structures are respectively embedded in the two slot structures, and the threaded fastening mechanism is capable of being synchronously rotated with the driven turntable.

12. The battery packaging mold of claim 11, wherein: The plurality of first auxiliary fixing structures are arranged in parallel.

13. The battery packaging mold of claim 9, wherein, Further comprising: A second driving mechanism is fixed on a support which is arranged on the first mold body, the second driving mechanism is in transmission connection with the base, and is used to drive the base to move along the selected linear direction together with the driving turntable and the plurality of driven turntables on the base, so as to connect or separate the first auxiliary fixing structure and the second auxiliary fixing structure along the selected linear direction, and the second driving mechanism is also used to simultaneously apply pressure to the plurality of threaded fastening mechanisms along the selected linear direction.

14. The battery packaging mold of claim 13, wherein: The second driving mechanism is a linear driving mechanism, or the second driving mechanism is a rotary driving mechanism, a gear is fixed on a transmission shaft of the second driving mechanism, a connecting rod is fixedly arranged on the base, a convex tooth structure is arranged on the connecting rod, and the gear is in meshing connection with the convex tooth structure on the connecting rod.

15. The battery packaging mold of claim 14, wherein: The battery packaging mold further comprises a power supply which is in electrical connection with the first driving mechanism and the second driving mechanism.

16. The battery packaging mold of claim 14, wherein: The battery packaging mold further comprises a controller which is in electrical connection with the first driving mechanism and the second driving mechanism, and is used to adjust the rotation direction of the transmission shaft of the first driving mechanism and the second driving mechanism.

17. A battery in-situ swelling rate testing device, characterized in that, The battery packaging mold comprises: A thickness sensor and the battery packaging mold of any one of claims 1-16, wherein the thickness sensor is used to monitor the thickness of the electrode plate of the packaged battery.

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